Šķēle A, Dubrovskis V, Upītis A, Kārkliņš A, Kristapsons M, Ziemelis I. BIOFUEL FOR NATURE PROTECTION. ETR [Internet]. 2001 Jun. 20 [cited 2024 Nov. 21];1:186-90. Available from: https://journals23.rta.lv/index.php/ETR/article/view/1957