1
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3
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5
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8
by Henderson, Robert
Published 2007
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Published 2009
10
11
by Ma, Hai Yan, Yang, Jie
Published 2009
12
13
14
Published 2003
15
Published 2009
16
17
by Proujan, Carl
Published 2007
18
by Yang, Fei, Wang, Xiao Mei
Published 2009
19
by Yi, Fang Lin
Published 2009
20
by Jiang, Xia
Published 2015