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APA Citation
Balodis, J., Morozova, K., Silabriedis, G., Kalinka, M., Balodis, K., Mitrofanovs, I., Baltmane, I., & Jumare, I. (2016). changing the national height system and GEOID model in Latvia. Geodesy and cartography, 42(1), 20–24. http://access.bl.uk/ark:/81055/vdc_100034282429.0x000026