Natural Resources Research
Natural Resources Research > 2006 > 15 > 4 > 271-281
Natural Resources Research > 2006 > 15 > 4 > 283-308
Natural Resources Research > 2008 > 17 > 4 > 227-243
Natural Resources Research > 2009 > 18 > 4 > 285-333
Natural Resources Research > 2014 > 23 > 1 > 159-173