Sousa, M. D., Yang, M., Lopes-Corrales, E., Tan, C., Hansen, J. A., Dupont, B., & Good, R. A. (1977). Ecotaxis: The principle and its application to the study of Hodgkin's disease.

Sousa, M D., M. Yang, E. Lopes-Corrales, C. Tan, J A. Hansen, B. Dupont, ja R A. Good. Ecotaxis: The Principle and Its Application to the Study of Hodgkin's Disease. 1977.

Sousa, M D., et al. Ecotaxis: The Principle and Its Application to the Study of Hodgkin's Disease. 1977.