“Nonlinear Diffusion Problems of Mathematical Biology”, U. of Michigan Press, Ann Arbor, 1989.

“On the Classical Trapping Problem”, with C. P. Calderon, Journal of Mathematical Biosciences 102: 183-190 (1990).

“Modeling Tumor Growth”, with C. P. Calderon, Journal of Mathematical Biosciences 103: 97-114 (1991).

“Existence and Uniqueness of Solutions for Nonlinear Diffusion Equations of Population Biology with Initial Data in LP-Spaces”, Rev. Union Matematica Argentina, Vol. 36: 195-207 (1990).

“Dispersal Models”, with C. P. Calderon, Rev. Union Matematica Argentina, Vol. 37: 212-229 (1991).

“Variational Principles in Biology”, with C. P. Calderon, Rev. Union Matematica Argentina, Vol. 37: 16-23 (1991).

“Diverse Ideas in Modeling Tumor Growth”, with C. P. Calderon, Acta Cientifica Venezolana, Vol. 43; No. 2: 64-75 (1992).

“The Initial Boundary Value Problems for the Semilinear Diffusion Equations with Data in LP-Spaces”, Applicable Analysis-An International Journal, Vol. 72(1-2): 205-228 (1999).

“A Remark on the Existence and Uniqueness of Solutions of a Semilinear Parabolic Equation”, Journal of Nonlinear Analysis: Theory, Methods and Application. Vol. 50/3: 425-432 (2002).

“Existence and Uniqueness of Global Solutions of the Parabolic Equation for the Bi-Harmonic Type”, Proceedings of the IIIrd World Congress of Nonlinear Analysts: Journal of Nonlinear Analysis: Series A Theory and Methods. Vol. 42/2: 1321-1332 (2001).

“ The Initial Value Second Order Nonlinear Parabolic Equation with data in space”- Nonlinear Studies, Vol. 8, No. 2, 249 – 259 (2001).

“A selection of an elementary algorithm for optimization of phosphorus level in chicken diet”(Program Abstract); Fifth SIAM conference on control and its applications”, San Diego, California, CT01page 211 – 212, July 11-14, 2001.

“Variational principles and time-optimal control of biological systems: A theoretical perspective on the inhibition mechanisms in the dynamics of tumor necrosis and leukemia”;(Program Abstract) International Conference on Dynamics of Continuous, Discrete and Impulsive Systems, London, Canada, page 124, July 27-31, 2001.