Geodesic
A method of calculating the critical dimensions of composite operators in the massless nonlinear $\sigma$ model
Teoretičeskaâ i matematičeskaâ fizika, Tome 95 (1993) no. 1, pp. 160-175 
A. N. Vasil'ev; A. S. Stepanenko. A method of calculating the critical dimensions of composite operators in the massless nonlinear $\sigma$ model. Teoretičeskaâ i matematičeskaâ fizika, Tome 95 (1993) no. 1, pp. 160-175. http://geodesic.mathdoc.fr/item/TMF_1993_95_1_a14/
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     title = {A method of calculating the critical dimensions of composite operators in the massless nonlinear $\sigma$ model},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1993_95_1_a14/}
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A general scheme for caclculation of arbitrary system critical dimensions mixing under composite operators renormalization in massless $\sigma$-model with dimensional and MS-type renormalization scheme is formulated. As an example the critical dimensions of auxiliary field arbitrary degrees and of analogous operators with two additional derivatives are calculated.

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