@article {235880,
	title = {Revealing Oil Shale Hydrophobicity and Its Possible Upgrading by Film Flotation},
	journal = {Solid Fuel Chemistry},
	volume = {57},
	year = {2023},
	pages = {215-219},
	author = {El-Midany, AA and N Khairy and El-Mofty, SE}
}
