Konenberg, M; Merkli, M (Reprint Author), Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, Canada.
Konenberg, M (Reprint Author), Univ Stuttgart, Fachbereich Math, D-70569 Stuttgart, Germany.
Koenenberg, M.; Merkli, M., Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, Canada.
Koenenberg, M., Univ Stuttgart, Fachbereich Math, D-70569 Stuttgart, Germany.