The method of reduction of transfer matrix for modulated systems. - Grzegorz Wiatrowski; Adam Krzemieniewski (Ann. UMCS Informatica, 2005)

Application of computer algebra systems (CAS) to formal expansion of exact Callen equations into the systems of algebraic equations. - Adam Krzemieniewski; Grzegorz Wiatrowski (Ann. UMCS Informatica, 2006)

Application of computer algebra systems (CAS) to symbolic construction of coupled equations for magnetic susceptibility of amorphous systems with different coordination numbers. - Adam Krzemieniewski; Grzegorz Wiatrowski (Ann. UMCS Informatica, 2008)