Media type: E-Article Title: Detecting Unobserved Heterogeneity in Efficient Prices via Classifier-Lasso Contributor: Huang, Wenxin; Su, Liangjun; Zhuang, Yuan Published: Informa UK Limited, 2023 Published in: Journal of Business & Economic Statistics, 41 (2023) 2, Seite 509-522 Language: English DOI: 10.1080/07350015.2022.2036613 ISSN: 0735-0015; 1537-2707 Origination: Footnote: