@article{201804.0149,
	doi = {10.20944/preprints201804.0149.v1},
	url = {https://doi.org/10.20944/preprints201804.0149.v1},
	year = 2018,
	month = {April},
	publisher = {Preprints},
	author = {Zhijie Zhu and Hongwei Zhang and Jan Nemcik and Chen Cao and Jun Han},
	title = {Overburden Failure and Ground Pressure Behaviour of Longwall Top Coal Caving in Hard Multi-layered Roof},
	journal = {Preprints}
}