@article {givehchi2015effect,
	title = {The effect of electrostatic forces on filtration efficiency of granular filters},
	journal = {Powder technology},
	volume = {277},
	year = {2015},
	pages = {135{\textendash}140},
	publisher = {Elsevier},
	author = {Givehchi, Raheleh and Li, Qinghai and Tan, Zhongchao}
}