@article{GDZPPN001173871,
title = {Linear Algorithms for Testing the Sign Stability of a Matrix and for Finding Z-Maximum Matchings in Acyclic Graphs.},
journal = {Numerische Mathematik},
volume = {28},
year = {1977},
pages = {273-286},
zbl = {0348.65032},
url = {http://dml.mathdoc.fr/item/GDZPPN001173871}
}
Klee, V.; Driessche, P. van den. Linear Algorithms for Testing the Sign Stability of a Matrix and for Finding Z-Maximum Matchings in Acyclic Graphs.. Numerische Mathematik, Tome 28 (1977) pp. 273-286. http://gdmltest.u-ga.fr/item/GDZPPN001173871/