Trends in Ecology & Evolution
Trends in Ecology & Evolution > 2001 > 16 > 2 > 59-61
Trends in Ecology & Evolution > 2001 > 16 > 7 > 330-343
Trends in Ecology & Evolution > 2001 > 16 > 7 > 372-380
Trends in Ecology & Evolution > 2001 > 16 > 7 > 351-358