1. Late glacial plant remains near Ane in the vicinity of Jelgava: Voprosy tchetvertitchnoi geologii, II;Stelle;Trudy Instituta geologii,1963
2. Driasa floras augu atliekas kiegelu fabrikas “Progress” apkartne pie Jelgavas: Petera Stuckas Latvijas valsts Universitates zinantniskie raksti. 49. sej;Stelle;Biologijas zinatnes,1963
3. Punning J. M. , Ilves E. , and Liiva A. , 1966, Dating of ancient samples by the radiocarbon method: ENSV TA Toimetised, Bioloogiateaduste seeria, no. 4, p. 577–581 (in Russian).
4. Holocene coastal formations on the coast of south-west Estonia;Kessel;ENSV TA Geoloogia Instituudi uurimused,1963b
5. Eisen M. J. , 1958. Esivanemate varandus: Tallinn, p. 9 (in Estonian).