中国科学院数学与系统科学研究院期刊网
AMS
Asymptotic Expansions of the Heat Kernel of the Laplacian for General Annular Bounded Domains with Robin Boundary Conditions: Further Results
E. M. E. ZAYED
Acta Mathematica Sinica . 2003, (4): 679 -694 .  DOI: 10.1007/s10114-003-0257-3