%0 Journal Article %A J. Janas %T On a theorem of Lebow and Mlak for several commuting operators %J Studia Mathematica %D 1983 %P 249-253 %V 76 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-76-3-249-253/ %R 10.4064/sm-76-3-249-253 %G en %F 10_4064_sm_76_3_249_253