@article{MASLO_1978_28_1_a1,
     author = {Almeida Costa, A. and Ramalho, Margarita},
     title = {$B^*$-ideals and $Q^*$-ideals in non-commutative semirings},
     journal = {Mathematica slovaca},
     pages = {11--20},
     year = {1978},
     volume = {28},
     number = {1},
     mrnumber = {527770},
     zbl = {0369.16029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1978_28_1_a1/}
}