@article{TMF_2012_173_3_a1,
     author = {J. Atkinson and S. B. Lobb and F. W. Nijhoff},
     title = {An integrable multicomponent quad-equation and its {Lagrangian} formulation},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {363--374},
     publisher = {mathdoc},
     volume = {173},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2012_173_3_a1/}
}