Finding Cores of Limited Length. - Stephen Alstrup; Peter W. Lauridsen; Peer Sommerlund; Mikkel Thorup (WADS, 1997)

Dominators in Linear Time. - Stephen Alstrup; Dov Harel; Peter W. Lauridsen; Mikkel Thorup (SIAM J. Comput., 1999)

Generalized Dominators for Structured Programs. - Stephen Alstrup; Peter W. Lauridsen; Mikkel Thorup (Algorithmica, 2000)