By Kreyszig, Erwin, Erwin Kreyszig
By Smith, P.
By BAJPAI, A. C., Mustoe, L. R., Walker, D.
By Gallagher, Richard H., Glowinski, R., Gresho, P. M., Oden, J. Tinsley, Zienkiewicz, O. C.
By Smith, Ian M., Griffiths, D. V.
By Babuska, I., Zienkiewicz, O. C., Gago, J., Oliveira, E. R. de A.
By Lewis, R. W., Bettess, P., Hinton, Dr. E.
By Kreyszig, Erwin
By McQuarrie D.
By Vincent, Alan
By William E. Boyce, Richard C. DiPrima
By Gallagher, RH
By BAJPAI, AC
By Givoli, D.
By Pipkin
By Trudy A. Watt
By J. N. Jeffers
By David G. Kleinbaum, Mitchell Klein