[1] Hulanicki A. The distribution of energy of the Brownian motion in Gaussian field and analytic hypoellipticity
of certain subelliptic operators on the Heisenberg group. Studia Math, 1976, 56: 165-173

[2] Gaveau B. Principle de moindre action, propagation de la chaleur et estimees sous-elliptiques sur certains
groups nilpotents. Acta Math, 1977, 139: 95-153

[3] Cygan J. Heat kernels for class 2 nilpotent groups. Studia Math, 1979, 64: 227-238

[4] Hueber H, M¨uller D. Asymptotics for some Green kernels on the Heisenberg group and the Martin boundary.
Math Ann, 1989, 283: 97-119

[5] Garofalo N, Segala F. Estimates of the fundamental solution and Wiener’s criterion for the heat equation
on the Heisenberg group. Indiana Univ Math Jour, 1998, 38(4): 1155-1196

[6] Coulhon T, M¨uller D, Zienkiewicz J. About Riesz transforms on the Heisenberg groups. Math Ann, 1996,
305: 369-379

[7] Zhu Fuliu. The heat kernel and the Riesz transforms on the quaternionic Heisenberg groups. Pacific Jour
of Math, 2003, 209(1): 175-195

[8] Luan Jingwen, Zhu Fuliu. The Martin compactification of the quaternionic Heisenberg group. Acta Math
Sinica, 2005, 21(6)

[9] Thangavelu S. Harmonic Analysis on the Heisenberg Group. Boston, Basel, Berlin: Birkha¨user, 1998

[10] Halgason S. Differential Geometry, Lie Group, and Symmetric Spaces. New York: Academic Press, 1978

[11] Takahhashi R. Quelques resultats sur l’analysis harmonique dans l’espace symetrique non compact de rang
1 du type exceptionnel. Lect Notes in Math, 1997, 739: 511-567

[12] Koecher M, Remmert R. Cayley Numbers or Alternative Division Algebras. Graduate Texts in Mathematics,
123. Springer-Verlag, 1990. 249-264

[13]Zhu Fuliu. On the heat kernel of the Riemannian symmetric space SU(6)/SP(3). Acta Mathematica
Scientia, 1995, 15(3): 310-325