1. R.P. Agarwal and D. O'Regan, Fixed point theory for acrylic maps between topological vector spaces having sufficiently many linear functionals and generalized contractive maps with closed values between complete metric spaces, In Set Valued Mappings with Applications in Nonlinear Analysis, (Edited by R.P. Agarwal and D. O'Regan), Gordon and Breach (to appear).
2. Common fixed points of some multivalued maps;Bose;Tamkang Jour. Math,1977
3. M. Frigon, Fixed point results for multivalued contractions on gauge spaces, In Set Valued Mappings with Applications in Nonlinear Analysis, (Edited by R.P. Agarwal and D. O'Regan), Gordon and Breach (to appear).