References
- Danckwerts , P.V. 1970 . Gas Liquid Reactions , New York : McGraw-Hill .
- Kahane , C.S. and Hath , J. 1976 . Anal. Appl , 53 : 343
- Pao , C.V. 1982 . J. Math. Anal. Appl , 87 : 165
- Pao , C.V . 1982 . Rocky Mountain J. Math. , 12 : 55
- Pearson , J.R.A. 1963 . Appl. Sci, Res , Xl9 : 321
- Protter , M.H. and Weinberger , H.F. 1967 . “ Maximum Principles in Differential Equations ” . Englewood Cliffs, N.J : Prentice-Hall .
- Sattinger , D.H. 1972 . Indiana Univ. Math, J. , 21 : 979
- Zhou , L. and Pao , C.V. 1982 . Jy Nonlinear Anal , 6 : 1163