Gerhard Weikum    Gottfried Vossen  Transactional Information Systems Theory Algorithms and the Practice of Concurrency Control and Recovery ScienceDirect Google Books spends two pages on the topic I dont seem to have access to the full text but this would probably give a good indication of the depth to which this article should discuss the topic   Professional NoSQL has a short blurb that could further help to establish notability   I had considered nominating the article again but Id probably still vote weak keep and rewrite again