add citation

Author: jmejia8

README.md

@@ -1,6 +1,11 @@
 # Infeasibility detector for Multiobjective Bilevel Optimization
 
-This project implements the labeling process to identify infeasible solutions in multi-objective bilevel optimization.
+This project implements the labeling process to identify infeasible solutions in multi-objective bilevel optimization described in the paper:
+
+```
+J. -A. Mejía-de-Dios, A. Rodríguez-Molina and E. Mezura-Montes, "An Efficient Data-Driven Framework for Detecting Infeasible Solutions in Multiobjective Evolutionary Bilevel Optimization," in IEEE Transactions on Evolutionary Computation, doi: 10.1109/TEVC.2024.3469156.
+```
+
 
 ## Project Structure
 
@@ -48,7 +53,8 @@ Note that if `pof.csv` is given, the `epsilon` parameter should be given.
 
 ## How to cite?
 
-Please cite us using the bibtex entry
+Please cite us using the following bibtex entry
+
 
 ```bib
 @article{MejadeDios2024,
@@ -64,10 +70,4 @@ Please cite us using the bibtex entry
 }
 ```
 
-or the citation string
-
-```
-J. -A. Mejía-de-Dios, A. Rodríguez-Molina and E. Mezura-Montes, "An Efficient Data-Driven Framework for Detecting Infeasible Solutions in Multiobjective Evolutionary Bilevel Optimization," in IEEE Transactions on Evolutionary Computation, doi: 10.1109/TEVC.2024.3469156. keywords: {Optimization;Evolutionary computation;Vectors;Linear programming;Metaheuristics;Computational modeling;Closed box;Training;Predictive models;Measurement}, 
-```
-