@inbook{Hfner_JKM_14, author = {H\"ofner, Peter and Jipsen, Peter and Kahl, Wolfram and M\"uller, Martin Eric}, booktitle = {Lecture Notes in Computer Science}, isbn = {978-3-319-06251-8}, month = may, pages = {2}, paperurl = {https://trustworthy.systems/publications/nicta_full_text/8840.pdf}, title = {Preface: {R}elational and Algebraic Methods in Computer Science}, volume = {8428}, year = {2014} }