@article{ELA_2007__16__a6,
     author = {Grundy, D.A. and Johnson, C.R. and Olesky, D.D. and van den Driessche, P.},
     title = {Products of $M$-matrices and nested sequences of principal minors},
     journal = {The electronic journal of linear algebra},
     pages = {380--388},
     publisher = {mathdoc},
     volume = {16},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2007__16__a6/}
}