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- [22] DIOPHANTINE EQUATION X(X+D)(X+2D)+Y(Y+D)(Y+2D) = Z(Z+D)(Z+2D) CANADIAN MATHEMATICAL BULLETIN-BULLETIN CANADIEN DE MATHEMATIQUES, 1974, 17 (01): : 27 - 34
- [26] GEOMETRY OF DIFFERENTIAL EQUATION Y'''=G(X,Y,Y')Y'' + H (X,Y,Y')Y''(2) ATTI DELLA ACCADEMIA NAZIONALE DEI LINCEI RENDICONTI-CLASSE DI SCIENZE FISICHE-MATEMATICHE & NATURALI, 1969, 46 (05): : 535 - &
- [27] EQUATION F(F(X,Y), F(Z,Y)) =F(X,Z) NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1974, 21 (01): : A153 - A153