@article{GDZPPN002402408,
title = {Constency and Replaceability for Conull Matrices.},
journal = {Mathematische Zeitschrift},
volume = {105},
year = {1968},
pages = {208-212},
zbl = {0155.38801},
url = {http://dml.mathdoc.fr/item/GDZPPN002402408}
}
Macphail, M.S.; Chang, S.C.; Snyder, A. Constency and Replaceability for Conull Matrices.. Mathematische Zeitschrift, Tome 105 (1968) pp. 208-212. http://gdmltest.u-ga.fr/item/GDZPPN002402408/