Geodesic
Current commutators on the light cone and perturbation theory
Teoretičeskaâ i matematičeskaâ fizika, Tome 17 (1973) no. 3, pp. 359-372

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A study is made of the light-cone behavior of the matrix element of the commutator of conserved currents between one-nucleon states at zero momentum transfer for the scalar gtuon model in the second order in the gluon-nucleon coupling constant and the principal singularity of this matrix element in the ladder approximation is also studied. 
@article{TMF_1973_17_3_a5,
     author = {N. I. Usyukina},
     title = {Current commutators on the light cone and perturbation theory},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {359--372},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1973_17_3_a5/}
}
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N. I. Usyukina. Current commutators on the light cone and perturbation theory. Teoretičeskaâ i matematičeskaâ fizika, Tome 17 (1973) no. 3, pp. 359-372. http://geodesic.mathdoc.fr/item/TMF_1973_17_3_a5/