On the theory of equivalent operators and application to the numerical solution of uniformly elliptic partial differential equations
1990 ◽
Vol 11
(2)
◽
pp. 109-163
◽
2005 ◽
Vol 166
(1)
◽
pp. 84-94
◽
2015 ◽
Vol 50
◽
pp. 291-303
◽
2016 ◽
Vol 55
(3)
◽
pp. 2797-2804
◽
1976 ◽
pp. 309-332
◽
1972 ◽
Vol 9
(3)
◽
pp. 496-527
◽
1997 ◽
Vol 84
(2-3)
◽
pp. 275-302
◽