by Chetouani, L., Guechi, L., Lecheheb, A., Hammann, T.F., Messouber, A.
Published in Physica A (15.12.1996)

by Chetouani, L, Chouchaoui, A, Hammann, T.F
Published in Physics letters. A (01.08.1995)

by Hammann, T.F.
Published in Physics letters. B (1971)

by Bentaïba, M., Chetouani, L., Hammann, T.F.
Published in Physics letters. A (04.07.1994)

by Chetouani, L., Guechi, L., Hammann, T.F.
Published in Physics letters. A (23.11.1987)

by Chetouani, L., Chouchaoui, A., Hammann, T.F.
Published in Physics letters. A (23.12.1991)

by Chetouani, L, Hammann, TF
Published in Physical review. A, General physics (01.12.1986)

by Hammann, T.F.
Published in Physics letters. B (12.04.1971)