O.F, L. (2003). Present condition, problem and development prospect of a coal industry of Ukraine. General Energy Institute of the National Academy of Sciences of Ukraine.
Chicago-Zitierstil (17. Ausg.)O.F, Lyashenko. Present Condition, Problem and Development Prospect of a Coal Industry of Ukraine. General Energy Institute of the National Academy of Sciences of Ukraine, 2003.
MLA-Zitierstil (8. Ausg.)O.F, Lyashenko. Present Condition, Problem and Development Prospect of a Coal Industry of Ukraine. General Energy Institute of the National Academy of Sciences of Ukraine, 2003.
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