Staprēns, Aleksandrs, and Gofrīds Noviks. “ECOVILLAGE ‘ VARAVĪKSNES ’ THE SOIL AND WATER ENVIRONMENTAL PERFORMANCE EVALUATION”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 20, Apr. 2016, pp. 325-30, https://doi.org/10.17770/het2016.20.3515.