@article{MM2_1979__28_154636,
     author = {Shiing-shen Chern and Chia-kuei Peng},
     title = {Lie {Groups} and {KdV} {Equations.}},
     journal = {Manuscripta mathematica},
     pages = {207--218},
     publisher = {mathdoc},
     volume = {28},
     year = {1979},
     zbl = {0408.35074},
     url = {http://geodesic.mathdoc.fr/item/MM2_1979__28_154636/}
}