Beniak, Juraj, Krizan, Peter, Matus, Milos, Svatek, Michal (2015). ECOLOGICAL PLA PLASTIC USED FOR FDM RAPID PROTOTYPING TECHNOLOGY. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, 117-124. https://doi.org/10.5593/sgem2015/b21/s7.016