readme: add citations

refs #6 (comment)

README.md

@@ -29,6 +29,31 @@ See [this comment](https://doi.org/10.15363/thinklab.d43#7 "Thinklab · Concensu
 
 This repository depends on `modzs.gctx` — a legacy probe × signature matrix of differential expression z-scores. Due to large file size (42.5 GB) this file is not uploaded to GitHub. To recreate this analysis rather than just use the results, users should retrieve [`modzs.gctx` from figshare](https://doi.org/10.6084/m9.figshare.3759129 "modzs.gctx: a legacy LINCS L1000 dataset of differential expression signatures · figshare") and place it in the [`download`](download) directory.
 
+## Citation
+
+See the [Transcriptional signatures of perturbation from LINCS L1000](https://git.dhimmel.com/rephetio-manuscript/#transcriptional-signatures-of-perturbation-from-lincs-l1000) section of the Rephetio manuscript for the final description of this work.
+Citations related to this repository are below:
+
+1. **Systematic integration of biomedical knowledge prioritizes drugs for repurposing**
+Daniel Scott Himmelstein, Antoine Lizee, Christine Hessler, Leo Brueggeman, Sabrina L Chen, Dexter Hadley, Ari Green, Pouya Khankhanian, Sergio E Baranzini
+*eLife* (2017-09-22) <https://doi.org/cdfk>
+DOI: [10.7554/elife.26726](https://doi.org/10.7554/elife.26726) · PMID: [28936969](https://www.ncbi.nlm.nih.gov/pubmed/28936969) · PMCID: [PMC5640425](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640425)
+
+2. **Consensus signatures for LINCS L1000 perturbations**
+Daniel Himmelstein, Leo Brueggeman, Sergio Baranzini
+*Figshare* (2016-03-08) <https://doi.org/f3mqvs>
+DOI: [10.6084/m9.figshare.3085426.v1](https://doi.org/10.6084/m9.figshare.3085426.v1)
+
+3. **dhimmel/lincs v2.0: Refined Consensus Signatures From Lincs L1000**
+Daniel Himmelstein, Leo Brueggeman, Sergio Baranzini
+*Zenodo* (2016-03-08) <https://doi.org/f3mqvr>
+DOI: [10.5281/zenodo.47223](https://doi.org/10.5281/zenodo.47223)
+
+4. **Computing consensus transcriptional profiles for LINCS L1000 perturbations**
+Daniel Himmelstein, Caty Chung
+*ThinkLab* (2015-03-26) <https://doi.org/f3mqwc>
+DOI: [10.15363/thinklab.d43](https://doi.org/10.15363/thinklab.d43)
+
 ## Environment
 
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