%0 Journal Article %A Tomaszewski, Witold %T On laws of the form $ab\equiv ba$ equivalent to the abelian law %J Rendiconti del Seminario Matematico della Università di Padova %D 2016 %P 19-34 %V 136 %I European Mathematical Society Publishing House %C Zuerich, Switzerland %U http://www.numdam.org/articles/10.4171/RSMUP/136-3/ %R 10.4171/RSMUP/136-3 %F RSMUP_2016__136__19_0