Environmental changes induced by human activities in the Northern Curonian Lagoon (Eastern Baltic) : diatoms and stable isotope dataVaikutiene, Giedre; Skipityte, Raminta; Mažeika, Jonas; Martma, TõnuEstonian journal of earth sciences2017 / p. 93-108 : ill https://doi.org/10.3176/earth.2017.07

Paired organic and carbonate carbon isotope records through the Middle and Upper Ordovician of EstoniaHints, Olle; Kaljo, Dimitri; Lepland, Aivo; Liiv, Merlin; Martma, Tõnu; Ainsaar, Leho13th International Symposium on the Ordovician System : Novosibirsk, Russia (July 19-22, 2019) : contributions2019 / p. 75-77 http://www.igcp653.org/wp-content/uploads/2019/07/ISOS13Proceedings.pdf