@article{FPM_2006_12_3_a9,
     author = {Yu. P. Razmyslov},
     title = {Twenty five (unary version)},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {225--238},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2006_12_3_a9/}
}