Evans, K., Jacob, N., & Shen, C. (2015). SOME FELLER SEMIGROUPS ON C_∞(R^n×Z^m) GENERATED BY PSEUDO-DIFFERENTIAL OPERATORS. Mathematika, 61(2), pp. 402-413. doi:10.1112/S002557931500011X

Evans, Kristian, Neils Jacob, and Chenglin Shen. "SOME FELLER SEMIGROUPS ON C_∞(R^n×Z^m) GENERATED BY PSEUDO-DIFFERENTIAL OPERATORS." Mathematika 61, no. 2 (2015): 402-413.

Evans, Kristian, Neils Jacob, and Chenglin Shen. "SOME FELLER SEMIGROUPS ON C_∞(R^n×Z^m) GENERATED BY PSEUDO-DIFFERENTIAL OPERATORS." Mathematika 61.2 (2015): 402-413.