Õkva, K., T. Nevalainen, K. Mauranen, and P. Pokk. “Modified Tapvei OÜ Stairs Induce an Anxiolytic Effect in Female C57BL/6 Mice in the Elevated Plus-Maze Test”. Scandinavian Journal of Laboratory Animal Science, vol. 39, no. 1, Dec. 2012, pp. 5-9, doi:10.23675/sjlas.v39i1.241.