@article{TIMM_1998_5_a24,
     author = {I. I. Eremin},
     title = {Sigma-piecewise functions and problems of disjunctive programming},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {357--380},
     publisher = {mathdoc},
     volume = {5},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_1998_5_a24/}
}