@article{IM2_1989_33_1_a0,
     author = {I. K. Babenko},
     title = {Closed geodesics, asymptotic volume, and characteristics of group growth},
     journal = {Izvestiya. Mathematics},
     pages = {1--37},
     year = {1989},
     volume = {33},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_33_1_a0/}
}