John F. Kolen, Jordan B. Pollack. The observers' paradox: apparent computational complexity in physical systems. J. Exp. Theor. Artif. Intell., 7(3):253-269, 1995. [doi]
@article{KolenP95,
title = {The observers' paradox: apparent computational complexity in physical systems},
author = {John F. Kolen and Jordan B. Pollack},
year = {1995},
doi = {10.1080/09528139508953809},
url = {http://dx.doi.org/10.1080/09528139508953809},
researchr = {https://researchr.org/publication/KolenP95},
cites = {0},
citedby = {0},
journal = {J. Exp. Theor. Artif. Intell.},
volume = {7},
number = {3},
pages = {253-269},
}