@article{SEMR_2015_12_a83,
     author = {Maxim P. Limonov},
     title = {Non-regular graph coverings and lifting the hyperelliptic involution},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {372--380},
     publisher = {mathdoc},
     volume = {12},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2015_12_a83/}
}