Sikkema, P. C. (1953). Differential operators and differential equations of infinite order with constant coefficients: Researches in connection with integral functions of finite order. Groningen: Wolters - Noordhoff.
Chicago Style CitationSikkema, P. C. Differential Operators and Differential Equations of Infinite Order With Constant Coefficients: Researches in Connection With Integral Functions of Finite Order. Groningen: Wolters - Noordhoff, 1953.
MLA CitationSikkema, P. C. Differential Operators and Differential Equations of Infinite Order With Constant Coefficients: Researches in Connection With Integral Functions of Finite Order. Groningen: Wolters - Noordhoff, 1953.
Warning: These citations may not always be 100% accurate.