@article{IVM_1986_3_a15,
     author = {E. G. Tret'yakova},
     title = {Biordered sets of idempotents of semigroups of certain types},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {77--80},
     publisher = {mathdoc},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1986_3_a15/}
}