@book{43877,
	author = {Younis, S. I. and Rashed, Nahed M.},
	title = {Effect of water stress and potassium fertilizer on the growth, yield and composition of essential oil of fennel plant},
	url = {http://nile.enal.sci.eg/EALE/2010/MUJPP/110/7/931.pdf}
}