@article{ELA_2007__16__a28,
     author = {Hartwig, R.E. and Patricio, Pedro},
     title = {On {Roth's} pseudo equivalence over rings},
     journal = {The electronic journal of linear algebra},
     pages = {111--124},
     publisher = {mathdoc},
     volume = {16},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2007__16__a28/}
}