I︠A︡kov Ėlʹevich I︠U︡dovich

• Ėlementy-primesi v iskopaemykh ugli︠a︡kh
• I︠U︡riĭ Vasilʹevich Stepanov
• Litogenez i geokhimii︠a︡ osadochnykh format︠s︡iĭ Timano-Uralʹskogo regiona