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USDA:10.2983/035.030.0316
USDA:10.2983/035.031.0423
USDA:10.2983/035.033.0119
USDA:10.2983/0730-8000(2006)25[403:OACSOT]2.0.CO;2
USDA:10.2983/0730-8000(2008)27[313:TKOCSI]2.0.CO;2
USDA:10.2983/0730-8000(2008)27[323:PRASOP]2.0.CO;2