@article{reladj, title = "Relational Algebra by Way of Adjunctions", author = "Jeremy Gibbons and Fritz Henglein and Ralf Hinze and Nicolas Wu", year = "2018", journal = "PACMPL", month = "September", note = "Winner of a Distinguished Paper Award", number = "ICFP", url = "http://www.cs.ox.ac.uk/jeremy.gibbons/publications/reladj.pdf", volume = "2", doi = "10.1145/3236781", }