1. Adams, C. G. (1970). A reconsideration of the East Indian letter classification of the Tertiary. Bulletin of the British Museum (Natural History). Geology, 19(3), 85–137.
2. Aubert, O., & Droxler, A. W. (1996). Seismic stratigraphy and depositional signatures of the Maldive carbonate system (Indian Ocean). Marine and Petroleum Geology, 13(5), 503–536.
3. Banner, T. F., & Hodgkinson, L. R. (1991). A revision of the foraminiferal subfamily Heterostegininae. Revista Espanola de Micropaleontologia, 13, 101–140.
4. Beavington-Penney, S. J., & Racey, A. (2004). Ecology of extant nummulitids and other large benthic foraminifera in paleoenvironmental analysis. Earth-Science Reviews, 67, 219–265.
5. Benedetti, A., & Briguglio, A. (2012). Risananeiza crassaparies n. sp. from the Late Chattian of Porto Badisco (southern Apulia). Bollettino della Società Paleontologica Italiana, 51, 167–176.