@Article{BordewichSemple2005,
AUTHOR = {Bordewich, Magnus and Semple, Charles},
TITLE = {On the computational complexity of the rooted subtree prune and regraft distance},
YEAR = {2005},
JOURNAL = {ACOM},
VOLUME = {8},
PAGES = {409-423},
URL = {http://dx.doi.org/10.1007/s00026-004-0229-z},
NOTE = {
http://www.math.canterbury.ac.nz/~c.semple/papers/BS04.pdf},
ANNOTE = {BIBUPDATE : 20070919},
KEYWORDS = {agreement forest, from rooted trees, NP complete, SPR distance}
}