@article{2679,
author = {Porter, A. Duane},
title = {Systems of four equations with a matrix application in a finite field},
journal = {Portugaliae mathematica},
volume = {31},
year = {1972},
pages = {121-131},
zbl = {0243.15012},
mrnumber = {0302618},
language = {en},
url = {http://dml.mathdoc.fr/item/2679}
}
Porter, A. Duane. Systems of four equations with a matrix application in a finite field. Portugaliae mathematica, Tome 31 (1972) pp. 121-131. http://gdmltest.u-ga.fr/item/2679/