Sandbian chitinozoan biostratigraphy - tracking the North Estonian Ordovician regional stages across the Palaeobaltic basinBauert, Heikki; Bauert, Garmen; Stouge, Svend10th Baltic Stratigraphic Conference : Checiny, 12-14 September 2017 : abstracts and field guide2017 / p. 15-16 : ill http://geo.uw.edu.pl/tl_files/publikacje/10th_Baltic_Stratigraphic_Conference_Abstracts_and_Field_Guide.pdf

Towards a revised Sandbian conodont biozonation of BalticaPaiste, Tõnn; Männik, Peep; Stouge, Svend; Meidla, TõnuEstonian journal of earth sciences2023 / p. 153 https://doi.org/10.3176/earth.2023.07

Upper Middle to lower Upper Ordovician chitinozoans and conodonts from the Bliudziai-150 core, southern LithuaniaStouge, Svend; Bauert, Garmen; Bauert, Heikki; Nõlvak, Jaak; Rasmussen, Jan A.Canadian journal of earth sciences2016 / p. 781-787 : ill https://doi.org/10.1139/cjes-2015-0205