4[1]Peter B.rkey.Francois Lévêcque.Voluntary Approaches for Environmental Protection in the European Union.ENV/EPOC/GEEI (98) 28/HNAL. 被引量：1
5[2]Hidefumi Imura.The Use of Voluntary Approaches in Japan-an Initial Survey ENV/EPOC/GEEI(98)28/FINAL. 被引量：1
6Peter Borkey and Francois L e v e que, Working Party on proaches For Environmental Police Integration Voluntary Approaches For Environmental Protection In The European Union,(1998)P4. 被引量：1
7Steve Baeke Prof_Marc De Clercp Frederik Matthijs, CAVA Working Paper No-99/08/3,The Nature of Voluntary Approaches Empirical Evidence and Patters Literaure Survey, p6. 被引量：1
8Environmental Agreements, The Role and Effect of Environmental Agreements in Environmental Polices. Edited by The Environmental Law Network International, 1998.P 43. 被引量：1
9EEA, European Environment Agency(1997), Environmental Agreements-Environmental Effectiveness,Environmental Issues Series No 3- Vol 1 and 2,Copenhagen. 被引量：1
