1. R.P. Agarwal and R.C. Gupta, On the solution of Holt’s problem, BIT 24(1984), 342–346.
2. R.P. Agarwal and D. O’Regan, Boundary value problems of nonsingular type on the semi-infinite interval, Tohoku Math. J. 51(1999), 391–397.
3. R.P. Agarwal and D. O’Regan, Infinite interval problems modelling the flow of a gas through a semi-infinite porous medium, Studies Appl. Math., to appear.
4. R.P. Agarwal and D. O’Regan, Boundary value problems on the half line modelling phenomena in the theory of colloids, to appear.
5. R.P. Agarwal and D. O’Regan, Singular problems on the infinite interval modelling phenomena in draining flows, to appear.