@article{1103035756,
author = {Reid, William T.},
title = {Riccati matrix differential equations and non-oscillation criteria for associated linear differential systems.},
journal = {Pacific J. Math.},
volume = {13},
number = {4},
year = {1963},
pages = { 665-685},
language = {en},
url = {http://dml.mathdoc.fr/item/1103035756}
}
Reid, William T. Riccati matrix differential equations and non-oscillation criteria for associated linear differential systems.. Pacific J. Math., Tome 13 (1963) no. 4, pp. 665-685. http://gdmltest.u-ga.fr/item/1103035756/