@article{TMF_1972_10_3_a1,
     author = {D. V. Volkov and A. A. Zheltukhin and V. I. Tkach},
     title = {On~the minimal interaction of $\pi$-mesons},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {329--337},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1972_10_3_a1/}
}