Changes of acoustic emission and strain in hard coal during gas sorption–desorption cycles

International Journal of Coal Geology - Tập 70 - Trang 305-312 - 2007
Zofia Majewska1, Jerzy Ziętek1
1AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Al. Mickiewicza 30, 30-059 Kraków, Poland

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