K. Šneidere, S. Montemurro, S. Mondini, J. Harlamova, Z. Ulmane, and A. Stepens, “COGNITIVE RESERVE AND COGNITIVE PERFORMANCE IN HEALTHY LATVIAN SENIORS”, SIE, vol. 7, pp. 261–269, May 2018, doi: 10.17770/sie2018vol1.3221.