- Application of carbon isotopes to the study of the Ordovician and Silurian of the BalticMartma, Tõnu2006 https://digi.lib.ttu.ee/i/?107 https://www.ester.ee/record=b2209327*est
- Automatic fed-batch cultivation for economic in vivo isotopic labelingVanatalu, Kalju; Tsanev, RobertJournal of biotechnology2008 / Suppl. 1, p. S512-S513 https://ru.article.sk/book/24372689/ef131e/automatic-fedbatch-cultivation-for-economic-in-vivo-isotopic-labeling.html
- Eesti vete isotoopkoostisVaikmäe, ReinEesti Geograafia Seltsi aastaraamat = Yearbook of the Estonian Geographical Society. 47. kd2024 / lk. 36-46 https://www.ester.ee/record=b1237665*est https://www.ester.ee/record=b4668698*est
- Isotoop-paleoklimatoloogia ja -hüdroloogiaVaikmäe, ReinGeoloogia instituudi kuuskümmend viis aastat : loomine ja muutumised, inimesed ja teadus, meenutused ja suundumused2012 / lk. 138-143 : fot
- Searching for the Ordovician-Silurian boundary in Estonia, Latvia and LithuaniaMeidla, Tõnu; Hints, Olle; Ainsaar, LehoEstonian journal of earth sciences2023 / p. 70-73 : ill https://doi.org/10.3176/earth.2023.53 https://www.scopus.com/sourceid/6000195392 https://www.scopus.com/record/display.uri?eid=2-s2.0-85164578393&origin=inward&txGid=a0ed88b000a153b3718b3b718450f12a https://jcr.clarivate.com/jcr-jp/journal-profile?journal=EST%20J%20EARTH%20SCI&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:001015399200003
- Surface mass balance and stable oxygen isotope ratios from shallow firn cores on Fimbulisen, East AntarcticaSchlosser, Elisabeth; Martma, TõnuAnnals of glaciology2012 / p. 70-78 : ill https://kirjandus.geoloogia.info/en/reference/24196
- Variations in carbon isotope composition of microfossils and bulk organic matter from the Middle Ordovician through Wenlock (Silurian) in EstoniaHints, Olle; Kaljo, Dimitri; Kaptein, Helja; Martma, Tõnu; Munnecke, Axel10th Baltic Stratigraphic Conference : Checiny, 12-14 September 2017 : abstracts and field guide2017 / p. 36-37 http://geo.uw.edu.pl/tl_files/publikacje/10th_Baltic_Stratigraphic_Conference_Abstracts_and_Field_Guide.pdf