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