A concept of adjointness and symmetry of differential expressions based on the generalised Lagrange identity and Green's formula
1983 ◽
pp. 161-169
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2018 ◽
Vol 468
(1)
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pp. 473-479
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1968 ◽
Vol s1-43
(1)
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pp. 539-547
Keyword(s):
Keyword(s):
2014 ◽
Vol 51
(2)
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pp. 314-324
1995 ◽
Vol 12
(6)
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pp. 1254
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