1. Identification of multiple mineralisation phases by statistical methods;Clark;Trans. Inst. Min. Metall.,1974
2. Maximum likelihood estimation for mixtures of two normal distributions;Dick;Biometrics,1973
3. Applied regression analysis;Draper,1967
4. Statistical theory with engineering applications;Hald,1952
5. FORTRAN IV program for nonlinear estimation;McCammon;Kansas Geol. Survey Computer Contr.,1969