Y. Miyazaki, Application of interpolation spaces with a function parameter to the
eigenvalue distribution of compact operators,
J. Fac. Sci. Univ. Tokyo. Sect. IA. Math. 38 (1991), 319-338.
T. Muramatu, On Besov spaces and Sobolev spaces of generalized functions
defined on a general region,
Publ. Res. Inst. Math. Sci. Kyoto Univ. 9 (1974),
325-396.
T. Muramatu and M. Nagase, On sufficient conditions for the boundedness
of pseudo-differential operators, Proc. Japan Acad. Ser. A
Math. Sci. 55 (1979), 293-296.