@article{00697116, title = {Estimates for the Cauchy matrix of perturbed linear impulsive equation.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {17}, year = {1994}, pages = {753-758}, doi = {10.1155/S0161171294001055}, zbl = {0810.34009}, language = {en}, url = {http://dml.mathdoc.fr/item/00697116} }
Simeonov, P.S.; Bajnov, D.D. Estimates for the Cauchy matrix of perturbed linear impulsive equation.. International Journal of Mathematics and Mathematical Sciences, Tome 17 (1994) pp. 753-758. doi : 10.1155/S0161171294001055. http://gdmltest.u-ga.fr/item/00697116/