Switching from Bidirectional to Unidirectional Search. - Hermann Kaindl; Gerhard Kainz; Roland Steiner; Andreas Auer; Klaus Radda (IJCAI, 1999)

Asymmetry in search. - Hermann Kaindl; Gerhard Kainz; Klaus Radda (IEEE Trans. Syst. Man Cybern. Part B, 2001)