Uchman A., Kazakauskas V., Gaigalas A., 2009. Trace fossils from late Weichselian (Nemunas) glaciolacustrine sediments of Lithuania. The Tenth International Ichnofabric Workshop. Program and abstracts with field trip guidebook. Henan Polytechnic University, Jiazuo, China, p. 49-50.

Uchman A., Gaigalas A., Melešytė M., Kazakauskas V. 2009. Examples of ichnofabrics from Late Pleistocene-Holocene fluvial sediments of Lithuania. The Tenth International Ichnofabric Workshop. Program and abstracts with field trip guidebook. Henan Polytechnic University, Jiazuo, China, p. 48-49.

Uchman A., Gaigalas A., Kazakauskas V. 2008. Trace fossils from Weichselian (Nemunas) glaciolacustrine sediments in eastern Lithuania. The Second International Congress on Ichnology. Abstract book and the intra-congress field trip guidebook. Polish Geological Institute, Warszawa, p. 122.

Uchman A., Gaigalas A., Kazakauskas V., 2007. Trace fossils from Pleistocene lacustrine varve clays in some localities of Lithuania. Limnogeology: tales of an evolving Earth, 4th International Limneology Congress, ILIC 2007, Barcelona, Programme and abstract book. Planetearth, Earth Sciences for Society, Barcelona, p. 42.