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Proc Natl Acad Sci U S A, 1978 Nagel A, Stein EM.
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Subelliptic estimates for complexes. [PDF]
Proc Natl Acad Sci U S A, 1970 Guillemin V, Sternberg S.
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Proc Natl Acad Sci U S A, 1972 Kohn JJ.
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Jerison-Lee identity and Semi-linear subelliptic equation on CR manifold [PDF]
, 2023 Xi‐Nan Ma, Qianzhong Ou, Tian Wu
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Symplectic geometry and positivity of pseudo-differential operators. [PDF]
Proc Natl Acad Sci U S A, 1982 Fefferman C, Phong DH.
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Singular integrals related to the Radon transform and boundary value problems. [PDF]
Proc Natl Acad Sci U S A, 1983 Phong DH, Stein EM.
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Critical Equations Involving Nonlocal Subelliptic Operators on Stratified Lie Groups: Spectrum, Bifurcation and Multiplicity [PDF]
Sekhar Ghosh, Vishvesh Kumar
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