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Universal regularizations.
Teoretičeskaâ i matematičeskaâ fizika, Tome 84 (1990) no. 3, pp. 398-410 Cet article a éte moissonné depuis la source Math-Net.Ru

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It is shown that from the linearized Slavnov identity introduced in an earlier paper [2] it follows that the effective Lagrangian of the regularized theory can be reduced to a BRST-invariant form by a certain special linear transformation of the fields. Technically, the proof of the corresponding theorem requires the introduction of a new system of ghosts. The new ghosts make it possible, in particular, to interpret the original symmetry condition nonperturbatively. 
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O. I. Zavialov; A. M. Malokostov. Universal regularizations.. Teoretičeskaâ i matematičeskaâ fizika, Tome 84 (1990) no. 3, pp. 398-410. http://geodesic.mathdoc.fr/item/TMF_1990_84_3_a6/

[1] Zavyalov O. I., Malokostov A. M., TMF, 84:1 (1990), 46–63 | MR | Zbl

[2] Zavyalov O. I., Malokostov A. M., TMF, 84:2 (1990), 195–204 | MR | Zbl

[3] Zavialov O. I., Renormalized Quantum Field Theory, Kluwer Academic Publishers, Dordrecht, Holland, 1990 | MR | Zbl

[4] Slavnov A. A., TMF, 10 (1972), 153–161

[5] Becchi C., Rouet A., Stora R., Commun. Math. Phys., 42 (1975), 127–142 | DOI | MR