@article{SM_1977_32_1_a6,
     author = {D. V. Znoiko},
     title = {The automorphism groups of regular trees},
     journal = {Sbornik. Mathematics},
     pages = {109--115},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {1977},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1977_32_1_a6/}
}