Tossavainen, T., J. Gröhn, L. Heikkinen, A. Kaasinen, and A. Viholainen. “University Mathematics students’ Study Habits and Use of Learning Materials”. LUMAT: International Journal on Math, Science and Technology Education, vol. 8, no. 1, Oct. 2020, pp. 252–270, doi:10.31129/LUMAT.8.1.1317.