1.		Valuing outdoor recreation activities using a meta-analysis model in China: an empirical study / Erda Wang [et al.] Resp- Sec.: Wang, Erda Ling, Zhao Ying, Zhou Little, Bertis B.
2.		Valuing natural and non-natural attributes for a national forest park using a choice experiment method / Erda Wang, Jianhua Wei and Huiyuan Lu Autor: Wang, Erda Coautor: ; Jianhua, Wei Huiyuan, Lu