Cite
Convergence- and sum-factors for series of complex numbers
MLA
E. Calabi, and A. Dvoretzky. “Convergence- and Sum-Factors for Series of Complex Numbers.” Transactions of the American Mathematical Society, vol. 70, Jan. 1951, pp. 177–94. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsair&AN=edsair.doi...........924732a7137d63578c4ba57c5be6ffd9&authtype=sso&custid=ns315887.
APA
E. Calabi, & A. Dvoretzky. (1951). Convergence- and sum-factors for series of complex numbers. Transactions of the American Mathematical Society, 70, 177–194.
Chicago
E. Calabi, and A. Dvoretzky. 1951. “Convergence- and Sum-Factors for Series of Complex Numbers.” Transactions of the American Mathematical Society 70 (January): 177–94. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsair&AN=edsair.doi...........924732a7137d63578c4ba57c5be6ffd9&authtype=sso&custid=ns315887.