DOC:10.1639/0044-7447(2000)029[0157:NTIAAT]2.0.CO;2
DOC:10.1639/0044-7447(2001)030[0122:HOFFFA]2.0.CO;2
DOC:10.1639/0044-7447(2001)030[0168:TEBROM]2.0.CO;2