Osis, Māris. “VAI VIDES SPECIĀLISTI SPĒJ NODROŠINĀT VIDES AIZSARDZĪBU?”.
ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, vol. 1, June 1999, pp. 135-,
https://doi.org/10.17770/etr1999vol1.1890.