1. Artinian and noetherian factorized groups;Amberg,1976
2. Lokal endlich-auflösbare Produkte von zwei hyperzentralen Gruppen;Amberg;Arch. Math. (Basel),1980
3. B. Amberg, S. Franciosi, and F. de Giovanni, Groups with a nilpotent triple factorization, Bull. Austral. Math. Soc., to appear.
4. Soluble groups which are products of nilpotent minimax groups;Amberg;Arch. Math. (Basel),1984
5. Überauflösbare Gruppen;Baer,1959