add ref for SLR

qianqianzhu · Jul 20, 2017 · b8d771e · b8d771e
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 # Mutation Testing Literature Survey Metadata
 sharing metadata related to our literature survey on mutation testing
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+Zhu Q, Panichella A, Zaidman A. (2016) A systematic literature review of how mutation testing supports test activities. PeerJ Preprints 4:e2483v1 https://doi.org/10.7287/peerj.preprints.2483v1