Al2O3/TiO2 ratio of the clay fraction of Late Ordovician–Silurian carbonate rocks as an indicator of paleoclimate of the Fennoscandian ShieldKiipli, Enli; Kiipli, Tarmo; Kallaste, Toivo; Siir, SvenPalaeogeography, palaeoclimatology, palaeoecology2012 / p. 312-320 : ill https://www.sciencedirect.com/science/article/pii/S0031018212005494

Geochemical discimination of the Upper Ordovician Kinnekulle Bentonite in the Billegrav-2 drill core section, Bornholm, DenmarkKiipli, Tarmo; Kallaste, Toivo; Nielsen, Arne T.; Schovsbo, Niels H.; Siir, SvenEstonian journal of earth sciences2014 / p. 264-270 : ill https://artiklid.elnet.ee/record=b2705908*est

Geochemistry and correlation of volcanic ash beds from the Rootsiküla Stage (Wenlock-Ludlow) in the eastern BalticKiipli, Tarmo; Einasto, Rein; Kallaste, Toivo; Nestor, Viiu-Kai; Perens, Helle; Siir, SvenEstonian journal of earth sciences2011 / 4, p. 207-219 : ill https://artiklid.elnet.ee/record=b2455468*est

Internal geochemical stratification of bentonites (altered volcanic ash beds) and its interpretation = Bentoniitide (muutunud vulkaanituhkade) geokeemiline isestratifikatsioon ja selle interpretatsioonSiir, Sven2015

Internal stratification of two thick Ordovician bentonites of Estonia : deciphering primary magmatic, sedimentary, environmental and diagenetic signaturesSiir, Sven; Kallaste, Toivo; Kiipli, Tarmo; Hints, RuttEstonian journal of earth sciences2015 / p. 140-158 : ill https://artiklid.elnet.ee/record=b2727638*est

Mean grain size fluctuations of the siliciclastic component in the Aizpute-41 core : implication for end-Ordovician glaciationKiipli, Enli; Siir, Sven; Kallaste, Toivo; Kiipli, TarmoEstonian journal of earth sciences2014 / p. 257-263 : ill https://artiklid.elnet.ee/record=b2705898*est