Amšiejus, J., L. Gabrielaitis, and R. Gruodis. “Application of Computer Aided Design Systems in Geotechnical engineering/Automatizuoto Projektavimo Sistemų Naudojimas Geotechnikoje”. Journal of Civil Engineering and Management, vol. 3, no. 11, Sept. 1997, pp. 70-75, doi:10.3846/13921525.1997.10531356.