@article{ADM_2003_3_a4,
     author = {Vasyl Pyekhtyeryev},
     title = {$\mathcal{H-}$ and $\mathcal{R-}$cross-sections of the full finite semigroup $T_n$},
     journal = {Algebra and discrete mathematics},
     pages = {82--88},
     publisher = {mathdoc},
     number = {3},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2003_3_a4/}
}