@article{SIGMA_2013_9_a23,
     author = {Peter J. Vassiliou},
     title = {Cauchy {Problem} for {a~Darboux} {Integrable} {Wave} {Map} {System} and {Equations} of {Lie} {Type}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2013},
     volume = {9},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2013_9_a23/}
}