Geodesic
Operator expansions in the minimal subtraction scheme. II.~Explicit formulas for coefficient functions
Teoretičeskaâ i matematičeskaâ fizika, Tome 76 (1988) no. 2, pp. 207-218

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In the framework of the operator expansions developed in [1–3], it is shown in an arbitrary model that the coefficient functions of the operator expansion (renormalized in the minimal subtraction scheme) are finite, and explicit formulas convenient for calculating them in practice are obtained. 
@article{TMF_1988_76_2_a4,
     author = {K. G. Chetyrkin},
     title = {Operator expansions in the minimal subtraction scheme. {II.~Explicit} formulas for coefficient functions},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {207--218},
     publisher = {mathdoc},
     volume = {76},
     number = {2},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1988_76_2_a4/}
}
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K. G. Chetyrkin. Operator expansions in the minimal subtraction scheme. II.~Explicit formulas for coefficient functions. Teoretičeskaâ i matematičeskaâ fizika, Tome 76 (1988) no. 2, pp. 207-218. http://geodesic.mathdoc.fr/item/TMF_1988_76_2_a4/