@article{05054218,
title = {Gegenbauer matrix polynomials and second order matrix differential equations.},
journal = {Divulgaciones Matem\'aticas},
volume = {12},
year = {2004},
pages = {101-115},
zbl = {1102.33010},
language = {en},
url = {http://dml.mathdoc.fr/item/05054218}
}
Sayyed, K.A.M.; Metwally, M.S.; Batahan, R.S. Gegenbauer matrix polynomials and second order matrix differential equations.. Divulgaciones Matemáticas, Tome 12 (2004) pp. 101-115. http://gdmltest.u-ga.fr/item/05054218/