1. Alvarez, L. W., Alvarez, W., Asaro, F., and Michel, H.V. Extraterrestrial Cause for the Cretaceous-Tertiary Extinction, Science, 1980, vol. 208, pp. 1095–1108.
2. Artem’eva, N.A. and Shuvalov, V.V., Dispersion of the Tunguska Meteorite Material, Tezisy mezhdunarodnoi konf. “100 let Tungusskomu fenomenu: Proshloe, nastoyashchee, budushchee” (Proc. Int. Conf. “100 Years of Tunguska Phenomenon: Last, Present, and Future”), Moscow, 2008, p. 16.
3. Barsukova, L.D., Kolesov, G.M., Malofeev, G.I, et al., Neutron Activation with Preliminary Sorption Concentration: Determination of Iridium in Rock Sediments, Zh. Analiticheskoi Khim., 1986, vol. 41, no. 5, pp. 874–878.
4. Bradley, J.P., Sandford, S.A., and Walker, R.M., Meteorites and the Early Solar System, Tucson: Arizona Univ. Press, 1988, pp. 861–895.
5. Bronshten, V.A., Fizika meteornykh yavlenii (Physics of Meteor Phenomena), Moscow: Nauka, 1981