1. Aalto, K.R., 1971, Glacial marine sedimentation of the Toby Conglomerate (Upper Proterozoic), Southeastern British Columbia, Northwestern Idaho and Northwestern Washington: Canadian Journal of Earth Sciences, v. 8, p. 753–787.
2. Aalto, K.R., 1981, The Late Precambrian Toby Formation of British Columbia, Idaho and Washington, in Hambrey, M.J., and, Harland, W.B., eds., Earth’s Pre-Pleistocene glacial record: London, Cambridge University Press, p. 731–735.
3. Acharyya, S.K., 1981, Late Paleozoic Rangit Pebble-Slate, Eastern Lesser Himalaya and Lachi Formation, Sikkim Higher Itimalaya, India, with short notes on homotaxial formations in Nepal, in Hambrey, M.J., and Harland, W.B., eds., Earth’s Pre-Pleistocene glacial record: London, Cambridge University Press, p. 316–325.
4. Ahmad, N., 1981, Late Paleozoic Talchir Tillites of Peninsular India, in Hambrey, M.J., and Harland, W.B., eds., Earth’s Pre-Pleistocene glacial record: London, Cambridge University Press, p. 326–330.
5. Allégre, C.J. and Caby, R., 1972, Chronologie absolve du Précambrien de l’Ahaggar occidental: Acad. Sci. Paris Comptes rendus, sér. D, v. 275, p. 2095–2098.