by Dahlhaus, E., Hajnal, P., Karpinski, M.
Published in Journal of algorithms (01.11.1993)

by Allouche, J. -P., Hajnal, P., Shallit, J. O.
Published in SIAM journal on discrete mathematics (01.02.1989)

by Békési, József, Galambos, Gábor, Hajnal, Péter
Published in European journal of operational research (01.09.2000)

by BARÁT, JÁNOS, HAJNAL, PÉTER
Published in Combinatorics, probability & computing (01.07.2001)

by Hajnal, P.
Published in Proceedings Fifth Annual Structure in Complexity Theory Conference (1990)

by Babai, László, Hajnal, Péter, Szemerédi, Endre, Turán, György
Published in Journal of computer and system sciences (01.10.1987)

by HAJNAL, P, SZEMEREDI, E
Published in SIAM journal on discrete mathematics (01.02.1990)

by HAJNAL, Peter J, BRUIN, Valentina De, BITEEN, Dale
Published in Journal of Library Automation (01.12.1977)