@article{ADM_2004_4_a4,
     author = {J. S. Ponizovskii},
     title = {Basic semigroups: theory and applications},
     journal = {Algebra and discrete mathematics},
     pages = {60--65},
     year = {2004},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2004_4_a4/}
}