@article{RSMUP_2005__114__1_0,
     author = {Lempken, Wolfgang and Parker, Christopher and Rowley, Peter},
     title = {$(S_3,S_6)${-Amalgams} {IV}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {1--19},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {114},
     year = {2005},
     mrnumber = {2207858},
     zbl = {1167.20318},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2005__114__1_0/}
}