@incollection{Al-Ashhab18,
author = {Saleem Al-Ashhab},
title = {Nullspace of Compound Magic Squares},
booktitle = {Matrix Theory},
publisher = {IntechOpen},
address = {Rijeka},
year = {2018},
editor = {Hassan A. Yasser},
chapter = {4},
doi = {10.5772/intechopen.74678},
url = {https://doi.org/10.5772/intechopen.74678}
}