@article{RSMUP_1974__52__71_0,
     author = {Zappa, Anna},
     title = {The center of the convolution algebra $C_u(G)$},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {71--83},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {52},
     year = {1974},
     mrnumber = {410264},
     zbl = {0311.43002},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1974__52__71_0/}
}