Smith, Nicholas, Cristiano Broccias, and Cathleen Waters. (2024) 2025. “Addressing Comparability and Retrieval Issues in Conversation Corpora: A Case Study on the Spoken British National Corpora (1994 and 2014), Using the past Perfect”. Research in Corpus Linguistics 12 (2):80–110. https://doi.org/10.32714/ricl.12.02.05.