New common ancestor problems in trees and directed acyclic graphs
2010 ◽
Vol 110
(8-9)
◽
pp. 331-335
◽
2012 ◽
Vol 35
(10)
◽
pp. 2194
◽
Keyword(s):
2002 ◽
Vol 13
(06)
◽
pp. 873-887
Keyword(s):