Pčolkins, A. and Borisovs, A. 1999. LIETDERĪGO PAZĪMJU ATLASE UN DAUDZDIMENSIJU DATU KLASTERIZĀCIJA UZ KOHONENA KARTES BĀZES. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference. 1, (Jun. 1999), 142–142. DOI:https://doi.org/10.17770/etr1999vol1.1889.