[1] N. A. ASSAD W. A. KIRK: Fixed point theorems for set-valued mappings of contractive type. Pacific J. of Math. 43 (1972), 553-562. MR 0341459

[2] F. E. BROWDER: Nonlinear mappings of nonexpansive and accretive type in Banach spaces. Bull. Amer. Math. Soc. 73 (1967), 875-882. MR 0232255 | Zbl 0176.45302

[3] F. E. BROWDER: Nonlinear Operators and Nonlinear Equations of Evolution in Banach spaces. Proc. Symp. Pure Math. vol. 18, part 2, Amer. Math. Soc., Providence, R.I., 1976. MR 0405188 | Zbl 0327.47022

[4] K. DEIMLING: Zeros of accretive operators. Manuscripts Math. 13 (1974), 365-374. MR 0350538 | Zbl 0288.47047

[5] D. J. DOWNING: Zeros of set-valued mappings. preprint.

[6] T. KATO: Nonlinear semigroups and evolution equations. J. Math. Soc. Japan 19 (1967), 508-520. MR 0226230 | Zbl 0163.38303

[7] W. A. KIRK: Local expansions and accretive mappings. preprint. MR 0712561 | Zbl 0534.47032

[8] W. A. KIRK C. MORALES: Condensing mappings and the Leray-Schauder boundary conditions. J. Nonlinear Anal., T.M.A., 3 (1979), 533-538. MR 0537339

[9] W. A. KIRK C. MORALES: Fixed point theorems for local strong pseudocontractions. Nonlinear Analysis: T.M.A 4 (1980), 363-368. MR 0563815

[10] W. A. KIRK R. SCHONEBERG: Some results on pseudo-contractive mappings. Pacific J. Math. 71 (1977), 89-100. MR 0487615

[11] R. H. MARTIN, Jr.: Differential equations on a closed subset of a Banach space. Trans. Amer. Math . Soc. 179 (1973), 399-414. MR 0318991

[12] C. MORALES: Pseudo-contractive mappings and the Leray-Schauder boundary condition. Comment. Math. Univ. Carolinae 20 (1979), 745-756. MR 0555187 | Zbl 0429.47021

[13] C. MORALES: On the fixed-point theory for local k-pseudocontractions. Proc. Amer. Math. Soc. 81 (1981), 71-74. MR 0589138 | Zbl 0479.47050

[14] C. MORALES: Zeros for accretive operators satisfying certain boundary conditions. J. Math. Anal. Appl. (to appear). MR 0773579 | Zbl 0579.47057

[15] W. O. RAY A. WALKER: Mapping theorems for Gateaux differentiable and accretive operators. Nonlinear Analysis: T.M.A 6 (1982), 423-433. MR 0661709

[16] R. TORREJÓN: A note on locally expansive and locally accretive operators. Canad. Math. Bull., to appear. MR 0697806