1. Chen, Z.-Q., Song, R., Two-sided eigenvalue estimates for subordinate processes in domain, to appear in J. Funct. Anal.
2. De Gruyter Studies in Mathematics;Fukushima, Masatoshi,1994
3. Recurrence and transience criteria for subordinated symmetric Markov processes;Ôkura, Hiroyuki;Forum Math.,2002
4. Pure and Applied Mathematics;Sharpe, Michael,1988
5. Lecture Notes in Mathematics, Vol. 426;Silverstein, Martin L.,1974