@misc{Kukla_Stanisław_Power,
 author={Kukla Stanisław and Zamorska Izabela},
 howpublished={online},
 publisher={Wydaw. Politechniki Częstochowskiej},
 language={eng},
 type={czasopismo},
 title={Power series solution of first order matrix differential equations},
 keywords={power series, differential equations},
}