Amazon.com: The TYPO3 Guidebook: Understand and Use TYPO3 CMS eBook : Brand, Felicity, McNamee, Heather, McGuire, Jeffrey A., McNamee, Heather, McGuire, Jeffrey A.: Kindle Store
GitHub - Tuurlijk/typo3scan: Scans TYPO3 extensions for usage of deprecated and or changed code
GitHub - ohader/scanner: Extraction of TYPO3 CMS Extension-Scanner package as separate composer library