Jan A. Bergstra, Wan J. Fokkink, C. A. Middelburg. Algebra of timed frames. Int. J. Comput. Math., 61(3-4):227-255, 1996. [doi]
@article{BergstraFM96,
title = {Algebra of timed frames},
author = {Jan A. Bergstra and Wan J. Fokkink and C. A. Middelburg},
year = {1996},
doi = {10.1080/00207169608804514},
url = {https://doi.org/10.1080/00207169608804514},
researchr = {https://researchr.org/publication/BergstraFM96},
cites = {0},
citedby = {0},
journal = {Int. J. Comput. Math.},
volume = {61},
number = {3-4},
pages = {227-255},
}