Seems like a cool Knife to have
http://journals.cambridge.org/download.php?file=%2FSYS%2FSYS7_01%2FS1477200008002934a.pdf&code=cf76c5471c7173ae6ca4bcf617ba24df
http://journals.cambridge.org/download.php?file=%2FSYS%2FSYS7_01%2FS1477200008002934a.pdf&code=cf76c5471c7173ae6ca4bcf617ba24df