diff --git a/README.md b/README.md
new file mode 100644
index 0000000..247bfbe
--- /dev/null
+++ b/README.md
@@ -0,0 +1,203 @@
+# Data Repository MathOverflow - zbMATH links
+
+This repository provides data used for the
+EMS Newsletter article
+
+ __References to academic literature in QA forums -
+ A case study on zbMATH links from MathOverflow__
+ _Fabian Müller, Moritz Schubotz Olaf Teschke_
+ EMS Newsletter October 19
+
+## Guide to reproduce
+
+* Download MathOverflow dump from
+```
+wget https://archive.org/download/stackexchange/mathoverflow.net.7z
+
+```
+* Check if the md5 sum of the file is `8011aabf2ae76358abbcf9a493ba9655.`
+
+If the md5 sum does not match you might have downloaded a never version.
+To reproduce our results we stored the downloaded zip as [GitHub release]().
+
+
+Take a moment to review the [dataset description](https://archive.org/details/stackexchange) the
+meta information
+
+ - Format: 7zipped
+ - Files:
+ - **badges**.xml
+ - UserId, e.g.: "420"
+ - Name, e.g.: "Teacher"
+ - Date, e.g.: "2008-09-15T08:55:03.923"
+ - **comments**.xml
+ - Id
+ - PostId
+ - Score
+ - Text, e.g.: "@Stu Thompson: Seems possible to me - why not try it?"
+ - CreationDate, e.g.:"2008-09-06T08:07:10.730"
+ - UserId
+ - **posts**.xml
+ - Id
+ - PostTypeId
+ - 1: Question
+ - 2: Answer
+ - ParentID (only present if PostTypeId is 2)
+ - AcceptedAnswerId (only present if PostTypeId is 1)
+ - CreationDate
+ - Score
+ - ViewCount
+ - Body
+ - OwnerUserId
+ - LastEditorUserId
+ - LastEditorDisplayName="Jeff Atwood"
+ - LastEditDate="2009-03-05T22:28:34.823"
+ - LastActivityDate="2009-03-11T12:51:01.480"
+ - CommunityOwnedDate="2009-03-11T12:51:01.480"
+ - ClosedDate="2009-03-11T12:51:01.480"
+ - Title=
+ - Tags=
+ - AnswerCount
+ - CommentCount
+ - FavoriteCount
+ - **posthistory**.xml
+ - Id
+ - PostHistoryTypeId
+ - 1: Initial Title - The first title a question is asked with.
+ - 2: Initial Body - The first raw body text a post is submitted with.
+ - 3: Initial Tags - The first tags a question is asked with.
+ - 4: Edit Title - A question's title has been changed.
+ - 5: Edit Body - A post's body has been changed, the raw text is stored here as markdown.
+ - 6: Edit Tags - A question's tags have been changed.
+ - 7: Rollback Title - A question's title has reverted to a previous version.
+ - 8: Rollback Body - A post's body has reverted to a previous version - the raw text is stored here.
+ - 9: Rollback Tags - A question's tags have reverted to a previous version.
+ - 10: Post Closed - A post was voted to be closed.
+ - 11: Post Reopened - A post was voted to be reopened.
+ - 12: Post Deleted - A post was voted to be removed.
+ - 13: Post Undeleted - A post was voted to be restored.
+ - 14: Post Locked - A post was locked by a moderator.
+ - 15: Post Unlocked - A post was unlocked by a moderator.
+ - 16: Community Owned - A post has become community owned.
+ - 17: Post Migrated - A post was migrated.
+ - 18: Question Merged - A question has had another, deleted question merged into itself.
+ - 19: Question Protected - A question was protected by a moderator
+ - 20: Question Unprotected - A question was unprotected by a moderator
+ - 21: Post Disassociated - An admin removes the OwnerUserId from a post.
+ - 22: Question Unmerged - A previously merged question has had its answers and votes restored.
+ - PostId
+ - RevisionGUID: At times more than one type of history record can be recorded by a single action. All of these will be grouped using the same RevisionGUID
+ - CreationDate: "2009-03-05T22:28:34.823"
+ - UserId
+ - UserDisplayName: populated if a user has been removed and no longer referenced by user Id
+ - Comment: This field will contain the comment made by the user who edited a post
+ - Text: A raw version of the new value for a given revision
+ - If PostHistoryTypeId = 10, 11, 12, 13, 14, or 15 this column will contain a JSON encoded string with all users who have voted for the PostHistoryTypeId
+ - If PostHistoryTypeId = 17 this column will contain migration details of either "from " or "to "
+ - CloseReasonId
+ - 1: Exact Duplicate - This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question.
+ - 2: off-topic
+ - 3: subjective
+ - 4: not a real question
+ - 7: too localized
+ - **postlinks**.xml
+ - Id
+ - CreationDate
+ - PostId
+ - RelatedPostId
+ - PostLinkTypeId
+ - 1: Linked
+ - 3: Duplicate
+ - **users**.xml
+ - Id
+ - Reputation
+ - CreationDate
+ - DisplayName
+ - EmailHash
+ - LastAccessDate
+ - WebsiteUrl
+ - Location
+ - Age
+ - AboutMe
+ - Views
+ - UpVotes
+ - DownVotes
+ - **votes**.xml
+ - Id
+ - PostId
+ - VoteTypeId
+ - ` 1`: AcceptedByOriginator
+ - ` 2`: UpMod
+ - ` 3`: DownMod
+ - ` 4`: Offensive
+ - ` 5`: Favorite - if VoteTypeId = 5 UserId will be populated
+ - ` 6`: Close
+ - ` 7`: Reopen
+ - ` 8`: BountyStart
+ - ` 9`: BountyClose
+ - `10`: Deletion
+ - `11`: Undeletion
+ - `12`: Spam
+ - `13`: InformModerator
+ - CreationDate
+ - UserId (only for VoteTypeId 5)
+ - BountyAmount (only for VoteTypeId 9)
+
+
+
+extract the file
+
+```bash
+physikerwelt@math-docker:~/mathoverflow$ 7z e mathoverflow.net.7z
+
+7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
+p7zip Version 16.02 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,8 CPUs Intel Core Processor (Skylake, IBRS) (506E3),ASM,AES-NI)
+
+Scanning the drive for archives:
+1 file, 317278828 bytes (303 MiB)
+
+Extracting archive: mathoverflow.net.7z
+--
+Path = mathoverflow.net.7z
+Type = 7z
+Physical Size = 317278828
+Headers Size = 349
+Method = BZip2
+Solid = +
+Blocks = 7
+
+Everything is Ok
+
+Files: 8
+Size: 1725254003
+Compressed: 317278828
+```
+
+extract posts with references to zbmath.org
+
+```bash
+physikerwelt@math-docker:~/mathoverflow$ wc -l Posts.xml
+252154 Posts.xml
+physikerwelt@math-docker:~/mathoverflow$ grep 'zbmath.org' Posts.xml > zblPosts.xml
+physikerwelt@math-docker:~/mathoverflow$ wc -l zblPosts.xml
+774 zblPosts.xml
+```
+
+
+
+In the following we analyse
+[Posts](https://github.com/ag-gipp/19emsMathOverflow/releases/download/v0.1/PostHistory.7z)
+that contain the string `zbmath.org`.
+
+## Files in the repository
+
+The following csv files, were all created using search
+and replace in a standard text editor.
+
+
+* [counts.csv](counts.csv) contains the number of all posts
+(not only with links to zbMATH) grouped by month.
+The first incomplete year and the current year were deleted.
+* [mathoverflow-links-stat.xlsx](mathoverflow-links-stat.xlsx) is an Microsoft Excel File that analyses the date
+distribution of the MathOverflow posts with links to zbMath in the table
+dates.
\ No newline at end of file
diff --git a/counts.csv b/counts.csv
new file mode 100644
index 0000000..32dbcc1
--- /dev/null
+++ b/counts.csv
@@ -0,0 +1,13 @@
+month,abs,rel
+1,18220,0.928360338
+2,18072,0.920819321
+3,19488,0.992968511
+4,19626,1
+5,19191,0.977835524
+6,16816,0.856822582
+7,17070,0.869764598
+8,19530,0.99510853
+9,18189,0.926780801
+10,19299,0.983338429
+11,18826,0.959237746
+12,17457,0.889483338
\ No newline at end of file
diff --git a/mathoverflow-links-stat.xlsx b/mathoverflow-links-stat.xlsx
new file mode 100644
index 0000000..4a3d4d9
Binary files /dev/null and b/mathoverflow-links-stat.xlsx differ