Aleksejenko, I., Sakne, J., Kalinka, M., Reiniks, M., Kalantaite, A., Krikstaponis, B., Parseliunas, E. K., Petroskevicius, P. and Viskontas, P. (2012) “The united geodetic vertical network of Latvia and Lithuania”, Geodesy and Cartography, 38(1), pp. 9-19. doi: 10.3846/20296991.2012.679800.