Čolović, P., B. Branovački, and D. Zgonjanin Bosić. “VALIDATION OF ZYGOSITY ASSESSMENT BY A SELF-REPORT QUESTIONNAIRE IN A SAMPLE OF ADULT SERBIAN TWINS”. Primenjena Psihologija, vol. 11, no. 4, Jan. 2019, pp. 419-32, doi:10.19090/pp.2018.4.419-432.