← Search Journal of Political Economy Vol. 45 No. 2 1937 Some Notes on Duopoly and Spatial Competition A. P. Lerner; H. W. Singer DOI10.1086/255039 Volume45 Issue2 Pages145-186 Languageen Sources semanticscholar openalex crossref 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 ✓