Perez, E., Kummeling, A., Janssen, M., Alvarado, R., Donado, P., Dwinger, R., . . . Jiménez Sánchez, C. (1997). Infectious agents associated with diarrhoea of calves in the canton of Tilarán, Costa Rica.

Perez, E., A. Kummeling, M.M.H Janssen, R. Alvarado, P. Donado, R.H Dwinger, Magally Caballero, y Carlos Jiménez Sánchez. Infectious Agents Associated With Diarrhoea of Calves in the Canton of Tilarán, Costa Rica. 1997.

Perez, E., et al. Infectious Agents Associated With Diarrhoea of Calves in the Canton of Tilarán, Costa Rica. 1997.