Fix #1

Author: anfederico

README.Rmd

@@ -95,3 +95,7 @@ $ python ppictx.py --run \
 - Cell lines that are primarily used in research due to their efficiency as an expression vector (e.g. *HeLa, HEK, CHO, Sf9*) may not be useful representations of cell-specific protein dynamics. However it may be useful to filter out PPIs annotated with these cell lines.
 
 - Cellosaurus contains synonymous cell lines, therefore some annotations such as *HEK (CVCL_M624)* and *HEK293 (CVCL_0045)* refer to the same cell line. Users should be aware of synonymous cell lines relevant to their interests and filter accordingly.
+
+## Cite
+
+Federico A, Monti S (2021) Contextualized Protein-Protein Interactions. _Patterns_. https://doi.org/10.1016/j.patter.2020.100153.

README.md

@@ -90,3 +90,8 @@ $ python ppictx.py --run \
     annotations such as *HEK (CVCL\_M624)* and *HEK293 (CVCL\_0045)*
     refer to the same cell line. Users should be aware of synonymous
     cell lines relevant to their interests and filter accordingly.
+
+## Cite
+
+Federico A, Monti S (2021) Contextualized Protein-Protein Interactions.
+*Patterns*. <https://doi.org/10.1016/j.patter.2020.100153>.