%0 Journal Article %A Kamasová, Hana %A Šimek, Antonín %T Inversion of quasi-triangular matrices %J Applications of Mathematics %D 1970 %P 146-148 %V 15 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1970.103278/ %R 10.21136/AM.1970.103278 %G en %F 10_21136_AM_1970_103278