References
- Brown , K.J. , M.M.A , IBRAHIM and R , SHIVAJI . 1981 . S-shaped bifurcation curves . Nonlinear Anal. TMA , 5 : 475 – 486 .
- Shivaji , R. 1981 . Solvability of Certain Classes of Semilinear Boundary Value Problems , U.K : Ph.D.thesis, Heriot-Watt University .