By Hammer J.S.   Strain J.J.   Friedberg A.   Fulop G.   in General Hospital Psychiatry

ISSN:0163-8343|17|3|165-172

Elsevier‎(1995)‎

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By Fulop G.   Gitman D.M.   Tyutin I.V.   in International Journal of Theoretical Physics

ISSN:0020-7748|38|7|1941-1968

Springer Publishing Company ‎(1999)‎

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