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by Bunimovich, L.A., Burago, D., Chernov, N., Cohen, E.G.D.
Published 2000
“...Encyclopaedia of Mathematical Sciences...”Published 2000
Springer Berlin Heidelberg
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by Kostrikin, Aleksej I., Shafarevich, Igor Rostislavovich (Igor’ Rostislavovich)
Published 1990
“...Encyclopaedia of Mathematical Sciences...”Published 1990
Springer Berlin Heidelberg
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by Collins, D.J., Grigorchuk, R.I., Kurchanov, P.F., Zieschang, H.
Published 1993
“...Encyclopaedia of Mathematical Sciences...”Published 1993
Springer Berlin Heidelberg