@article{ITA_2016__50_1_21_0,
     author = {Turki, Ramzi},
     title = {An isolated point in the {Heinis} spectrum},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {21--38},
     year = {2016},
     publisher = {EDP Sciences},
     volume = {50},
     number = {1},
     doi = {10.1051/ita/2016004},
     mrnumber = {3518157},
     zbl = {1354.68218},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/ita/2016004/}
}