@article{AUCMP_1989_30_1_a2,
     author = {Jajou, Amer F. and Zimmermann, Karel},
     title = {Max-separable equations and the set covering},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {13--21},
     year = {1989},
     volume = {30},
     number = {1},
     mrnumber = {1046071},
     zbl = {0706.65058},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1989_30_1_a2/}
}