@article{02213788,
title = {The singularity/nonsingularity problem for matrices satisfying diagonal dominance conditions formulated in terms of directed graphs.},
journal = {Zapiski Nauchnykh Seminarov POMI},
volume = {314},
year = {2004},
pages = {40-83},
zbl = {1073.15502},
language = {en},
url = {http://dml.mathdoc.fr/item/02213788}
}
Kolotilina, L.Yu. The singularity/nonsingularity problem for matrices satisfying diagonal dominance conditions formulated in terms of directed graphs.. Zapiski Nauchnykh Seminarov POMI, Tome 314 (2004) pp. 40-83. http://gdmltest.u-ga.fr/item/02213788/