Add ref to arxiv paper

[arnaudon]

No description provided.

[arnaudon]

@d-schindler , anywhere else we should add the citation?

[codecov-commenter]

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Merging #80 (55bcbaa) into master (b5d0c1e) will not change coverage.
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[arnaudon]

@d-schindler , do you see where it crashes the test? If you retrigger, it works, this is very odd. I'm not sure why, if you want to try to have a guess at it, you're welcome!

[d-schindler]

@d-schindler , anywhere else we should add the citation?

I think it's fine like that.

@d-schindler , do you see where it crashes the test? If you retrigger, it works, this is very odd. I'm not sure why, if you want to try to have a guess at it, you're welcome!

Where do I see at which operation the test crashes? Is it still about the eigendecomposition?