Spridzāns, Mārtiņš, et al. “POSSIBILITIES OF DEVELOPING INTERACTIVE E-LEARNING SYSTEM FOR BORDER GUARDS TRAINING IN THE STATE BORDER GUARD COLLEGE OF THE REPUBLIC OF LATVIA”. BORDER SECURITY AND MANAGEMENT, vol. 3, no. 8, Oct. 2020, pp. 45-53, https://doi.org/10.17770/bsm.v3i8.5358.