Harnack Inequalities and Gaussian Estimates for a Class of Hypoelliptic Operators
2006 ◽
Vol 358
(11)
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pp. 4873-4893
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2002 ◽
Vol 324
(3)
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pp. 521-556
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1986 ◽
Vol 26
(3)
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pp. 387-402
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2019 ◽
Vol 469
(2)
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pp. 568-593
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