%0 Journal Article %A Hager, Anthony W. %A Robertson, Lewis C. %T Extremal units in an archimedean Riesz space %J Rendiconti del Seminario Matematico della Università di Padova %D 1978 %P 97-115 %V 59 %I Seminario Matematico of the University of Padua %U http://www.numdam.org/item/RSMUP_1978__59__97_0/ %G en %F RSMUP_1978__59__97_0