Šlapeta, J. R., Koudela, B., Votýpka, J., Modrý, D., Hořejš, R., Lukeš, J. Coprodiagnosis of Hammondia heydorni in dogs by PCR based on ITS 1 rRNA: differentiation from morphologically indistinguishable oocysts of Neospora caninum. Veterinary Journal. 2002, 163(2), 147-154. ISSN 1090-0233. E-ISSN 1532-2971.