Nonlocal Symmetries of Integrable Linearly Degenerate Equations: A Comparative Study
2018 ◽
Vol 196
(2)
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pp. 1089-1110
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2001 ◽
Vol 268
(6)
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pp. 1739-1748
2001 ◽
Vol 48
(2)
◽
pp. 97-106
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