@article {9569,
	title = {Multiple tunneling channels order-disorder ferroelectric model and field-induced phase transition in relaxors},
	journal = {Physical Review B - Condensed Matter and Materials Physics},
	year = {2002},
	pages = {1741191-1741195},
	author = {Zhongqing Wu and Wenhui Duan and Zhirong Liu and Bing-Lin Gu and Xiao-Wen Zhang}
}
