While citations using standard citation styles are usually extracted accurately on ResearchGate, there are some instances where they cannot be extracted – for example, for full-text PDFs that have been created from scanned hard copies. PDF as a format is not particularly standard, and therefore creating algorithms to extract this information is an ongoing process, with varying levels of success.
Please also note that citations that do not have complete publication dates may not be included in your citation counts, as this is an important piece of information when it comes to matching citations to publications correctly. Additionally, if the citing paper is not on ResearchGate, this can also hinder our efforts to add the citation. Our citation data is regularly updated and we are working hard to improve how we extract and match citations, so if you notice some are missing, they may be added soon.