The Symmetry Approach to Classification of Integrable Equations
1991 ◽
pp. 115-184
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2002 ◽
Vol 33
(5)
◽
pp. 647-660
◽
2003 ◽
Vol 233
(3)
◽
pp. 513-543
◽
Keyword(s):
1987 ◽
Vol 42
(4)
◽
pp. 1-63
◽
Keyword(s):
1998 ◽
Vol 31
(31)
◽
pp. 6707-6715
◽
1990 ◽
pp. 102-133
◽
Keyword(s):
Keyword(s):