@article{10_1017_S0017089505002314,
     author = {IWAO, MASATAKA and TAKAHASHI, DAISUKE},
     title = {ULTRADISCRETE {HAMILTONIAN} {SYSTEMS}},
     journal = {Glasgow mathematical journal},
     pages = {87--97},
     year = {2005},
     volume = {47},
     number = {A},
     doi = {10.1017/S0017089505002314},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089505002314/}
}