1. Upper Triassic Radiolaria and radiolarian zonation from western North America;Blome;Bulletin of American Paleontology,1984
2. Radiolaria and Lower Mesozoic units of the USSR, east regions;Bragin;Transactions of USSR Academy of Science, Earth Science Section,1991
3. Stratigraphy and sedimentation of Naktong Subgroup (Lower Cretaceous), Gyeongsang Province, Southern Korea;Chang;Journal of Geolological Society of Korea,1966
4. The stratigraphic significance of the Baekjadong. Gumidong, and Gisadong Formations;Chang,1974
5. Unconformity-bounded stratigraphic units;Chang;Geological Society of America Bulletin,1975