diff --git a/.gitignore b/.gitignore
index 103f99f..d1f5326 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,17 @@
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
+
+# Enviroment files for testing
 env/
+
+# Distribution / packaging and Python egg metadata, generated from source files by setuptools.
+build/
+dist/
+*.egg-info/
+*.egg
+.eggs/
+
 .DS_Store
+
+.vscode/
diff --git a/HDPmt/HDPt_app.py b/HDPmt/HDPt_app.py
index 549635a..52bbc2a 100644
--- a/HDPmt/HDPt_app.py
+++ b/HDPmt/HDPt_app.py
@@ -275,11 +275,11 @@ def run():
                 and _HDPt_ is a lightweight tool that can be used to perform case studies
                 and visualize the modeled results. The implementation of
                 the Heliospheric Disturbance Propagation Model is described by
-                [Kouloumvakos et al. (2021)]().
+                [Kouloumvakos et al. (2021)](https://www.aanda.org/articles/aa/pdf/2023/01/aa44363-22.pdf).
 
                 **Github**: You can find [here](https://github.com/AthKouloumvakos/HDPmt) the latest version of HDPmt.
 
-                **Citation**: Please cite this software as [Kouloumvakos et al. (2021)]()
+                **Citation**: Please cite this software as [Kouloumvakos et al. (2021)](https://ui.adsabs.harvard.edu/abs/2023A%26A...669A..58K/exportcitation)
                 """)
     col1, col2 = st.columns((5, 1))
     col1.markdown("The development of the online tool has received funding from the \
diff --git a/HDPmt/config/app_styles.py b/HDPmt/config/app_styles.py
index 1cf1173..19df5cd 100644
--- a/HDPmt/config/app_styles.py
+++ b/HDPmt/config/app_styles.py
@@ -4,22 +4,6 @@ def apply(st):
                 #MainMenu {visibility: hidden;}
                 footer {visibility: hidden;}
                 </style> """, unsafe_allow_html=True)
-    # Do some css styling tricks here (e.g. remove the padding)
-    # https://medium.com/ssense-tech/streamlit-tips-tricks-and-hacks-for-data-scientists-d928414e0c16
-    padding = 1
-    st.markdown(f""" <style>
-                .css-12oz5g7{{
-                padding-top: {padding}rem;
-                margin-top: -3.5rem;
-                max-width: 50rem;
-                padding-right: {padding}rem;
-                padding-left: {padding}rem;
-                padding-bottom: {padding}rem;
-                }} </style> """, unsafe_allow_html=True)
-    st.markdown(f""" <style>
-                .css-128j0gw{{
-                margin-top: -3.0rem;
-                }} </style> """, unsafe_allow_html=True)
     # Reduce the space in horizontal component
     st.markdown(f""" <style>
                 hr {{
diff --git a/HDPmt/utils_plot.py b/HDPmt/utils_plot.py
index f0540ba..1f2de39 100644
--- a/HDPmt/utils_plot.py
+++ b/HDPmt/utils_plot.py
@@ -212,7 +212,7 @@ def overplot_(smodel, extra):
     plt.ylim(ylim)
     plt.xlabel('x-axis [Rsun]')
     plt.ylabel('y-axis [Rsun]')
-    plt.grid(b=True)
+    plt.grid(visible=True)
     title_text = 'Model Param.: $V_0=%1.0f\\,%s, a_0=%0.2f\\,%s, \\alpha=%1.2f, \\epsilon=%1.2f$' % (smodel.V0.value, smodel.V0.unit, smodel.a0.value, smodel.a0.unit, smodel.alpha, smodel.epsilon)
     plt.title(title_text, fontsize=10)