Voipio, Hanna-Marja, A-M Määttä, H Honkanen, R Haapakoski, M Heikkilä, K Mauranen, S Mering, and T Nevalainen. 2008. “Cage Material and Food Hopper As Determinants in Rat Preference Tests”. Scandinavian Journal of Laboratory Animal Science 35 (2):69-77. https://doi.org/10.23675/sjlas.v35i2.142.