Nauchnyĭ sovet po kriologii Zemli (Akademi︠i︡a nauk SSSR), Institut merzlotovedeni︠i︡a (Akademi︠i︡a nauk SSSR), International Conference on Permafrost, & Melʹnikov, P. I. (1988). Problemy geokriologii: Sbornik nauchnykh trudov. Nauka.
Dyfyniad Arddull ChicagoNauchnyĭ sovet po kriologii Zemli (Akademi︠i︡a nauk SSSR), Institut merzlotovedeni︠i︡a (Akademi︠i︡a nauk SSSR), International Conference on Permafrost, and Pavel Ivanovich Melʹnikov. Problemy Geokriologii: Sbornik Nauchnykh Trudov. Moskva: Nauka, 1988.
Dyfyniad MLANauchnyĭ sovet po kriologii Zemli (Akademi︠i︡a nauk SSSR), et al. Problemy Geokriologii: Sbornik Nauchnykh Trudov. Nauka, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.