Geodesic
Simple method of calculating the critical indices in the $1/n$~expansion
Teoretičeskaâ i matematičeskaâ fizika, Tome 46 (1981) no. 2, pp. 157-171

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A method is proposed for calculating critical indices based on the skeleton equations for the propagators; it yields equations for the indices of the type of self-consistent field equations. When these equations are iterated, the usual $1/n$ expansion of the indices is obtained. The method makes it possible to calculate the indices $\eta$ and $\nu$ in the order $1/n^2$ for any number of dimensions. 
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     author = {A. N. Vasil'ev and Yu. M. Pis'mak and Yu. R. Khonkonen},
     title = {Simple method of calculating the critical indices in the $1/n$~expansion},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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     publisher = {mathdoc},
     volume = {46},
     number = {2},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1981_46_2_a1/}
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A. N. Vasil'ev; Yu. M. Pis'mak; Yu. R. Khonkonen. Simple method of calculating the critical indices in the $1/n$~expansion. Teoretičeskaâ i matematičeskaâ fizika, Tome 46 (1981) no. 2, pp. 157-171. http://geodesic.mathdoc.fr/item/TMF_1981_46_2_a1/