Joost Engelfriet, Tero Harju, Andrzej Proskurowski, Grzegorz Rozenberg. Characterization and Complexity of Uniformly Non Primitive Labeled 2-Structures. Theoretical Computer Science, 154(2):247-282, 1996. [doi]
@article{EngelfrietHPR96,
title = {Characterization and Complexity of Uniformly Non Primitive Labeled 2-Structures},
author = {Joost Engelfriet and Tero Harju and Andrzej Proskurowski and Grzegorz Rozenberg},
year = {1996},
doi = {10.1016/0304-3975(94)00272-X},
url = {http://dx.doi.org/10.1016/0304-3975(94)00272-X},
researchr = {https://researchr.org/publication/EngelfrietHPR96},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {154},
number = {2},
pages = {247-282},
}