@article{RM_1993_48_1_a7,
     author = {G. B. Shabat and V. A. Gurvich},
     title = {A~solution of the {Harer--Zagier} equation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {167--168},
     publisher = {mathdoc},
     volume = {48},
     number = {1},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_1_a7/}
}