00458naa#a2200157#i#450# EN\\bibl\47165 20241231073426.2 1681-1208 20010825b2001####ek#y0engy0150####ca RU A mathematical model of the crustal waveguide Journal article Moscow Geophysical Center of the Russian Academy of Sciences 2001 14 с. Journal article local Karakin A V rjes.ru