The riquier problem for a nonlinear equation unresolved with respect to the Lévy iterated laplacian
1998 ◽
Vol 50
(11)
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pp. 1796-1800
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2018 ◽
Vol 50
(001)
◽
pp. 133-136
1975 ◽
Vol 51
(1)
◽
pp. 229-242
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