Andrzej Ehrenfeucht, Grzegorz Rozenberg. Square Systems. Fundamenta Informaticae, 20(1/2/3):75-111, 1994.
@article{EhrenfeuchtR94:0,
title = {Square Systems},
author = {Andrzej Ehrenfeucht and Grzegorz Rozenberg},
year = {1994},
researchr = {https://researchr.org/publication/EhrenfeuchtR94%3A0},
cites = {0},
citedby = {0},
journal = {Fundamenta Informaticae},
volume = {20},
number = {1/2/3},
pages = {75-111},
}