@article{ZNSL_1996_235_a11,
     author = {A. S. Fokas},
     title = {Integrability and beyond},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {235--244},
     publisher = {mathdoc},
     volume = {235},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1996_235_a11/}
}