@article{SIGMA_2013_9_a16,
     author = {Ian. M. Anderson and Mark E. Fels},
     title = {The {Cauchy} {Problem} for {Darboux} {Integrable} {Systems} and {Non-Linear} {d'Alembert} {Formulas}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2013},
     volume = {9},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2013_9_a16/}
}