@article{FPM_2012_17_4_a2,
     author = {E. A. Vassilieva and G. Schaeffer},
     title = {A~combinatorial way of counting unicellular maps and constellations},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {25--52},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2012_17_4_a2/}
}