Kuprijanova, Jekaterina, et al. “PRACTICAL ASPECTS OF PRACTICAL ASPECTS OF COOPERATION BETWEEN THE STATE BORDER GUARD OF LATVIA AND FEDERAL SECURITY SERVICE BORDER GUARD SERVICE OF RUSSIAN FEDERATION”. BORDER SECURITY AND MANAGEMENT, vol. 1, no. 6, May 2016, pp. 77-87, https://doi.org/10.17770/bsm.v1i6.1698.