%0 Journal Article %A Roggenkamp, K. W. %T Projective modules over clean orders %J Compositio Mathematica %D 1969 %P 185-194 %V 21 %N 2 %I Wolters-Noordhoff Publishing %U http://www.numdam.org/item/CM_1969__21_2_185_0/ %G en %F CM_1969__21_2_185_0