DOC:10.2747/0272-3646.23.6.427
DOC:10.2747/0272-3646.26.6.480
DOC:10.2747/0272-3646.29.6.487
DOC:10.2747/0272-3646.29.6.529
DOC:10.2747/0272-3646.31.2.156