@article{RSMUP_1993__89__113_0,
     author = {Duan, Z. Y.},
     title = {Extensions of abelian by hyper-(cyclic or finite) groups {(II)}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {113--126},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {89},
     year = {1993},
     mrnumber = {1229048},
     zbl = {0797.20026},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1993__89__113_0/}
}