Zālītis, Ivars, et al. “PROFESSIONAL TRAINING OF THE STATE BORDER GUARD OFFICIALS OF THE REPUBLIC OF LATVIA: ESSENTIALS, CHALLENGES AND POSSIBLE SOLUTIONS”. BORDER SECURITY AND MANAGEMENT, vol. 1, no. 6, May 2016, pp. 123-35, https://doi.org/10.17770/bsm.v1i6.1708.