A new optimized non-FSAL embedded Runge-Kutta-Nystrom algorithm of orders 6 and 4 in six stages. - Moawwad El-Mikkawy; El-Desouky Rahmo (Appl. Math. Comput., 2003)

Approximating Clarke's subgradients of semismooth functions by divided differences. - Marcin Studniarski; El-Desouky Rahmo (Numer. Algorithms, 2006)

A new recursive algorithm for inverting general tridiagonal and anti-tridiagonal matrices. - Moawwad El-Mikkawy; El-Desouky Rahmo (Appl. Math. Comput., 2008)

A new recursive algorithm for inverting general periodic pentadiagonal and anti-pentadiagonal matrices. - Moawwad El-Mikkawy; El-Desouky Rahmo (Appl. Math. Comput., 2009)

Symbolic algorithm for inverting cyclic pentadiagonal matrices recursively - Derivation and implementation. - Moawwad El-Mikkawy; El-Desouky Rahmo (Comput. Math. Appl., 2010)

Lower and upper Ginchev derivatives of vector functions and their applications to multiobjective optimization. - El-Desouky Rahmo; Aleksandra Stasiak; Marcin Studniarski (Optim. Lett., 2014)