@article{DAN_1960_132_6_a14,
     author = {\`E. G. Shutov},
     title = {Defining relations of finite semigroups of partial transformations},
     journal = {Doklady Akademii Nauk},
     pages = {1280--1282},
     publisher = {mathdoc},
     volume = {132},
     number = {6},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_6_a14/}
}