@article{MT_1993_25_a0,
     author = {S. A. Badaev},
     title = {Minimal enumerations},
     journal = {Matemati\v{c}eskie trudy},
     pages = {3--34},
     year = {1993},
     volume = {25},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1993_25_a0/}
}