Kolesnikov E.M., Stepanov A.I., Gorid'ko B.A., Kolesnikova N.V., Element and isotopic anomalies in peat from the Tunguska explosion (1908) area are probably traces of cometary matter, Meteoritics and Planetary Science, v.33, No. 4, A85, 1998
Kolesnikov E.M., Stepanov A.I., Gorid'ko B.A., Kolesnikova N.V., Element and isotopic anomalies in peat from the Tunguska explosion (1908) area are probably traces of cometary matter