%0 Journal Article %A Józef Joachim Telega %T Covariant derivative of product tensors %J Annales Polonici Mathematici %D 1972 %P 67-72 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-27-1-67-72/ %R 10.4064/ap-27-1-67-72 %G en %F 10_4064_ap_27_1_67_72