@article{RSMUP_1990__84__241_0,
     author = {Heineken, Hermann},
     title = {Nilpotent groups of class two that can appear as central quotient groups},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {241--248},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {84},
     year = {1990},
     mrnumber = {1101296},
     zbl = {0722.20011},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1990__84__241_0/}
}