When you use one of the components of the FEMPAR project, you should cite the related scientific publications (if any), to credit the work of the authors.
S. Badia, A. F. Martín and J. Principe. A Highly Scalable Parallel Implementation of Balancing Domain Decomposition by Constraints. SIAM Journal on Scientific Computing 36, 2 (2014), C190–C218.
S. Badia, A. F. Martín and J. Principe. Multilevel Balancing Domain Decomposition at Extreme Scales. SIAM Journal on Scientific Computing, (2016), C22–C52.