Renormalization of gauge invariant baryon trilocal operators

We give a brief description of the renormalization of the gauge invariant contour dependent trilocal operator defining the baryon wave function in QCD. It is pointed out that the multiplicative renormalization constant depends on the angles the contours make at their common point. However, for certain two-parameter classes of contours the angle dependence can be converted into dependence on a number which distinguishes these classes. (author)