共 10 条
[1]
Beals R.(1996)The Green function of model step two hypoelliptic operators and the analysis of certain tangential Cauchy Riemann complexes Adv. Math. 121 288-345
[2]
Gaveau B.(1993)Fundamental solutions for the powers of the Heisenberg sub-Laplacian Ill. J. Math. 37 455-476
[3]
Greiner P.(2000)Estimates for powers of sub-Laplacian on the non-isotropic Heisenberg group J. Geom. Anal. 10 653-678
[4]
Benson C.(1973)A fundamental solution for a subelliptic operator Bull. Am. Math. Soc. 79 209-223
[5]
Dooley A.H.(1967)Hypoelliptic second-order differential equations Acta Math. 119 147-171
[6]
Ratcliff G.(undefined)undefined undefined undefined undefined-undefined
[7]
Chang D.-C.(undefined)undefined undefined undefined undefined-undefined
[8]
Tie J.(undefined)undefined undefined undefined undefined-undefined
[9]
Folland G.B.(undefined)undefined undefined undefined undefined-undefined
[10]
Hörmander L.V.(undefined)undefined undefined undefined undefined-undefined