by Cerioli, M.R., Faria, L., Ferreira, T.O., Martinhon, C.A.J., Protti, F., Reed, B.
Published in Discrete Applied Mathematics (28.06.2008)

by Cerioli, M.R., Petito, P.
Published in Electronic notes in discrete mathematics (01.06.2005)

by Cerioli, M.R., Faria, L., Ferreira, T.O., Protti, F.
Published in Electronic notes in discrete mathematics (01.12.2004)

by M.R. Cerioli, J.L. Szwarcfiter
Published in Trends in Computational and Applied Mathematics (01.06.2000)