Selected Publications:

  1. Semigroups of nonlinear transformations, Michigan Math. J. 12 (1965), 317-320.
  2. Contraction semigroups in a function space, Pacific J. Math. 19 (1966), 35-38.
  3. Semigroups of maps in a locally compact space, Canadian J. Math. 19 (1967), 688-696.
  4. (with H. S. Collins) Remarks on certain function spaces, Math. Annalen 176 (1967), 157-168.
  5. Localization of the strict topology via bounded sets, Proc. American Math. Soc. 20 (1969), 413-414.
  6. A nonlinear Hille-Yosida-Phillips theorem, J. Functional Analysis 2 (1969), 345-353.
  7. Local groups of differentiable transformations, Math. Annalen 192 (1971), 243-249.
  8. A simplified proof of a theorem of Kato on linear evolution equations, J. Math. Soc. Japan 27 (1975), 474-478.
  9. (with R. Graff) Integral equations in Banach spaces, a general approach to the linear Cauchy problem, and applications to the nonlinear problem, J. Integral Eq. 1 (1979), 309-359.
  10. Semigroups of operators and second-order Cauchy problems, Semigroup Forum 31 (1985), 297-304.
  11. (with G. Rieder) A singular quasilinear parabolic problem in one space dimension, J. Differential Equations 91 (1991), 1-23.
  12. (with A. Holderrieth) Multiplicative perturbation of semigroup generators, Boll. Unione Mat. Italiana, Serie VII, 7-A (1993), 47-57.
  13. (with Guillermo Ferreyra) A multi-state, multi-control problem with unbounded controls, SIAM J. Control and Optimization 32 (1994), 1322-1331.
  14. Continuous dependence of nonnegative solutions of the heat equation on noncharacteristic Cauchy data, Applicable Analysis 56 (1995), 185-192.
  15. (with J. W. Neuberger) A theory of strongly continuous semigroups in terms of Lie generators, J. Functional Analysis 136 (1996), 114-126.
  16. (with G.Ferreyra) A free boundary problem in Rd with both smooth and nonsmooth fit, SIAM J. on Control and Optimization 36 (1998), 579-589.
  17. (with G. Ferreyra and P. Sundar) A technique for stochastic control problems with unbounded control set, J. Theoretical Probability 12 (1999), 255-270.
  18. (with Xueping Ru) The application of the method of quasireversibility to the sideways heat equation, J. Math. Anal and App. 236 (1999), 96-102.
  19. (with J. W. Neuberger) Linear extensions of nonlinear semigroups, Progress in Nonlinear Differential Eq. and Their App. 42 (2000), 96-102.
  20. (with W. J. Golz) The convection-diffusion equation for a finite domain with time varying boundary conditions, Applied Mathematics Letters 14 (2001), 983-988.