Hindsbo, O., Nielsen, C. V., Andreassen, J., Willingham, A. L., Bendixen, M., Nielsen, M. A., & Nielsen, N. O. (2000). Age-dependent Occurrence of the Intestinal Ciliate Balantidium coli in Pigs at a Danish Research Farm. Acta Vet Scand.

Hindsbo, O., C. V. Nielsen, J. Andreassen, A. L. Willingham, M. Bendixen, M. A. Nielsen, und N. O. Nielsen. "Age-dependent Occurrence of the Intestinal Ciliate Balantidium Coli in Pigs At a Danish Research Farm." Acta Vet Scand 2000.

Hindsbo, O., et al. "Age-dependent Occurrence of the Intestinal Ciliate Balantidium Coli in Pigs At a Danish Research Farm." Acta Vet Scand 2000.