%0 Journal Article %A Croom, F. H. %T Homotopy type of mapping tracks %J Compositio Mathematica %D 1970 %P 261-264 %V 22 %N 3 %I Wolters-Noordhoff Publishing %U http://www.numdam.org/item/CM_1970__22_3_261_0/ %G en %F CM_1970__22_3_261_0