@article{TMF_2005_143_2_a5,
     author = {A. F. Krutov and V. E. Troitsky},
     title = {Construction of form factors of composite systems by a generalized {Wigner--Eckart} theorem for the {Poincar\'e} group},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {258--277},
     publisher = {mathdoc},
     volume = {143},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2005_143_2_a5/}
}