V. RM, Lu NT, A. PS. Correlation of trace element composition of oils and other caustobiolites with chemical content of different types of biota and the Upper, Middle and the Lower Earth’s Crust. Vietnam J. Earth Sci. [Internet]. 2020 Dec. 14 [cited 2024 Nov. 25];43(1):23-32. Available from: https://vjs.ac.vn/index.php/jse/article/view/15573