Veronika Němcová, Jana Adámková, Kateřina Benediktová, Jaroslav Červený and HynekBurda, for carefully documenting that when dogs defecate and urinate, they
University Press. pp. 209–210. ISBN 978-1-4008-3411-2. Sabine Begall; HynekBurda; Cristian Eric Schleich (2007). Subterranean Rodents: News from Underground