Calibration results of different type spring gravimeters from the repeated measurements of Estonian calibration linesOja, Tõnis; Nikolenko, T.; Türk, K.; Ellmann, Artu; Jürgenson, HarliGeophysical research abstracts2010 / p. EGU2010-13590 https://www.nordicgeodeticcommission.com/wp-content/uploads/2014/10/NKG2010_Calibration-Estonia_TOja.pdf

Влияние наружной тепрературы на показания гравиметра Gs-11Maasik, Voldemar; Lump, NikolaiEesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika = Известия Академии наук Эстонской ССР. Физика. Математика = Proceedings of Academy of Sciences of the Estonian SSR. Physics. Mathematics1967 / lk. 201-206 https://www.ester.ee/record=b1264310*est