Joost Engelfriet. Reverse Twin Shuffles. Bulletin of the EATCS, 60:144, 1996.
@article{Engelfriet96:1, title = {Reverse Twin Shuffles}, author = {Joost Engelfriet}, year = {1996}, researchr = {https://researchr.org/publication/Engelfriet96%3A1}, cites = {0}, citedby = {0}, journal = {Bulletin of the EATCS}, volume = {60}, pages = {144}, }