Generalized solutions to Protter problems for 3-D Keldysh type equations
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1966 ◽
Vol 20
(1)
◽
pp. 56-60
1987 ◽
Vol 109
(4)
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pp. 591-611
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2013 ◽
Vol 11
(02)
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pp. 1350017
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2011 ◽
Vol 22
(4-5)
◽
pp. 247-254
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1989 ◽
pp. 371-400
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