@article{SIGMA_2015_11_a80,
     author = {Goo Ishikawa and Yoshinori Machida},
     title = {Monge{\textendash}Amp\`ere {Systems} with {Lagrangian} {Pairs}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2015},
     volume = {11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a80/}
}