Aghanabati, A. , , Ghasemi Nejad, E. , and Mazaheri Johari, M. . "Biostratigraphy and Paleoenvironmental study of Permian-Triassic boundary in Dalan and Kangan formations, South Pars Gas Field, South West of Iran", Journal of Stratigraphy and Sedimentology Researches, 30, 2, 2014, 1-22.