@article{CMUC_1998__39_1_a1,
     author = {Wang, Qingwen and Yang, Changlan},
     title = {The {Re-nonnegative} definite solutions to the matrix equation $AXB=C$},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {7--13},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {1998},
     mrnumber = {1622312},
     zbl = {0937.15008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1998__39_1_a1/}
}