- A new chitinozoan species from the Upper Ordovician of the East BalticNõlvak, JaakEstonian journal of earth sciences2007 / 1, p. 63-64 : ill
- Accretionary mechanisms and temporal sequence of formation of the Boda Limestone mud-mounds (Upper Ordovician), Siljan District, SwedenKröger, Björn; Ebbestad, Jan Ove R.; Lehnert, OliverJournal of sedimentary research2016 / p. 363-379 : ill https://doi.org/10.2110/jsr.2016.12
- Chitinozoan biostratigraphy of the Upper Ordovician D. clingani and P. linearis graptolite biozones on the Island of Bornholm, DenmarkVandenbroucke, Thijs R. A.; Recourt, Philippe; Nõlvak, Jaak; Nielsen, Arne T.Stratigraphy2013 / p. 281-301 : ill
- Conodont biostratigraphy in the Middle-Upper Ordovician boundary beds of EstoniaViira, ViiveEstonian journal of Earth sciences2008 / 1, p. 23-38 : ill
- Conodont biostratigraphy of the Oandu Stage (Katian, Upper Ordovician) in NE EstoniaMännik, PeepEstonian journal of earth sciences2017 / p. 1-12 : ill https://doi.org/10.3176/earth.2017.02
- Earliest Petroxestes borings from Sandbian (earliest late ordovician) bryozoans of Northern EstoniaVinn, Olev; Ernst, Andrej; Toom, UrsulaPalaios2019 / p. 453-457 https://doi.org/10.2110/palo.2019.054 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- Hirnantian (latest Ordovician) bio- and chemostatigraphy of the Stirnas-18 core, western LatviaHints, Linda; Hints, Olle; Kaljo, Dimitri; Kiipli, Tarmo; Männik, Peep; Nõlvak, Jaak; Pärnaste, HeljeEstonian journal of earth sciences2010 / p. 1-24 : ill https://artiklid.elnet.ee/record=b2739538*est
- Latest Ordovician to early Silurian integrated bio-and chemostratigraphy in northern Lithuania, central East BalticHints, Olle; Ainsaar, Leho; Lepland, Aivo; Männik, Peep; Meidla, Tõnu; Nõlvak, Jaak; Radzevičius, SigitasLille 2021 : Ordovician of the World : programme with abstracts2021 / p. 40-41 https://docplayer.net/219093593-Programme-with-abstracts-2021-virtual-annual-meeting-of-igcp-virtual-annual-meeting-of-igcp-735.html
- Links between bioerosion and oversized benthic fossils : insights from the Upper Ordovician of Estonia, BalticaToom, Ursula; Isakar, Mare; Vinn, Olev; Hints, OlleLille 2021 : Ordovician of the World : programme with abstracts2021 / p. 76-77 https://docplayer.net/219093593-Programme-with-abstracts-2021-virtual-annual-meeting-of-igcp-virtual-annual-meeting-of-igcp-735.html
- New bioclaustration in trepostome bryozoans from the Late Ordovician (Sandbian) of EstoniaVinn, Olev; Ernst, Andrej; Wilson, Mark A.; Toom, UrsulaLille 2021 : Ordovician of the World : programme with abstracts2021 / p. 78 https://docplayer.net/219093593-Programme-with-abstracts-2021-virtual-annual-meeting-of-igcp-virtual-annual-meeting-of-igcp-735.html
- New bioclaustration of a symbiont in the mantle cavity of Clitambonites schmidti (Brachiopoda) from the Sandbian (Upper Ordovician) of EstoniaVinn, Olev; Wislon, M. A.; Isakar, Mare; Toom, UrsulaPalaios2022 / p. 520−524 https://doi.org/10.2110/palo.2021.067 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- New biostratigraphically important chitinozoans from the Kukruse Regional Stage, Upper Ordovician of BaltoscandiaNõlvak, Jaak; Bauert, GarmenEstonian journal of earth sciences2015 / p. 218-224 : ill https://artiklid.elnet.ee/record=b2739527*est
- Palynomorph optical analyses for thermal maturity assessment of upper ordovician (Katian-Hirnantian) rocks from Southern EstoniaSorci, Andrea; Cirilli, Simonetta; Clayton, Geoff; Corrado, Sveva; Hints, Olle; Goodhue, Robbie; Schito, Andrea; Spina, AmaliaMarine and Petroleum Geology2020 / art. 104574 https://doi.org/10.1016/j.marpetgeo.2020.104574 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- Recent developments in the Upper Ordovician and lower Silurian conodont biostratigraphy in EstoniaMännik, PeepEstonian journal of earth sciences2007 / 1, p. 35-46 : ill
- Reconstructing Late Ordovician carbon cycle variationsPancost, Richard D; Freeman, Katherine H.; Herrmann, Achim D.; Patzkowsky, Mark E.; Ainsaar, Leo; Martma, TõnuGeochimica et cosmochimica acta2013 / p. 433-454 : ill
- Siliciclastic grain size composition of the Upper Ordovician rocks of the Blidene Formation in western LatviaLääts, JaanikaProceedings of the Estonian Academy of Sciences. Geology2006 / 2, p. 175-184 : ill
- Upper Ordovician volcanic ash bedsKiipli, Tarmo; Kallaste, Toivo; Kiipli, Enli; Orlova, KiiraEstonian geological sections / Geological Survey of Estonia2006 / p. 15-18 : ill
- Upper Sandbian-lower Katian bio- and chemostratigraphy in the Pajevonys-13 core section, LithuaniaHints, Linda; Paškevičius, Juozas; Martma, Tõnu; Männik, Peep; Nõlvak, JaakEstonian journal of earth sciences2016 / p. 85-97 : ill http://dx.doi.org/10.3176/earth.2016.08