Title: Special classes of excessive functions satisfying Harnack principle
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF022082550&ix=pm&I=0&V=D&pm=1" rel="nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF022082550&ix=pm&I=0&V=D&pm=1</a>
Subjects: Harmonic functions, Kernel functions, Brownian motion processes.