@article{PORMA_1991__48_2_115745,
     author = {Marques de S\'a, E. and Vieira, J. David},
     title = {Matrices and submatrices with constrained invariant factors},
     journal = {Portugaliae mathematica},
     pages = {113--142},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {1991},
     mrnumber = {1127116},
     zbl = {0735.15010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1991__48_2_115745/}
}