← Search Management Science 1987 Diffusion and advertising: the German telephone campaign SimonHermann; SebastianKarl-Heinz DOI10.5555/34012.34015 Sources semanticscholar openalex Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓