@article{DAN_1992_324_4_a1,
     author = {O. A. Dolotova},
     title = {On the complexity of minimal control tests for {Post} classes},
     journal = {Doklady Akademii Nauk},
     pages = {730--733},
     publisher = {mathdoc},
     volume = {324},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_324_4_a1/}
}