Geodesic
On the removal of cutoffs in the $S$-matrix
Teoretičeskaâ i matematičeskaâ fizika, Tome 18 (1974) no. 2, pp. 161-173 Cet article a éte moissonné depuis la source Math-Net.Ru

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Bogolyubov's $R$-operation is studied for $H_{\operatorname{int}}=\lambda:\varphi^4(x):$, where $\varphi(x)$ is a generalized free field with space-like regularization. It is shown that the coefficient functions of the perturbation series for the $S$-matrix tend to their renormalized values when the cutoffs are removed. 
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V. A. Shcherbina. On the removal of cutoffs in the $S$-matrix. Teoretičeskaâ i matematičeskaâ fizika, Tome 18 (1974) no. 2, pp. 161-173. http://geodesic.mathdoc.fr/item/TMF_1974_18_2_a1/

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