Geodesic
Discrete subexponential groups
Zapiski Nauchnykh Seminarov POMI, Differential geometry, Lie groups and mechanics. Part V, Tome 123 (1983), pp. 155-166 
A. E. Bereznyi. Discrete subexponential groups. Zapiski Nauchnykh Seminarov POMI, Differential geometry, Lie groups and mechanics. Part V, Tome 123 (1983), pp. 155-166. http://geodesic.mathdoc.fr/item/ZNSL_1983_123_a11/
@article{ZNSL_1983_123_a11,
     author = {A. E. Bereznyi},
     title = {Discrete subexponential groups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {155--166},
     year = {1983},
     volume = {123},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1983_123_a11/}
}
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

Discrete subexponential groups are defined as the groups with a subexponential growth of the Golod–Shafarevich coefficients (gosha). A class of these is studied in the present paper. An exact formula for the growth of the gosha coefficients for solvable groups is given.