By Grib A. A.   Parfionov G. N.   in Journal of Mathematical Sciences

ISSN:1072-3374|125|2|173-184

Springer Publishing Company ‎(2005)‎

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By Parfionov G.N.   Zapatrine R.R.   in International Journal of Theoretical Physics

ISSN:0020-7748|37|1|211-213

Springer Publishing Company ‎(1998)‎

Access to resources Favorite 3.301618