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@article{NUMA_1980__35_186295, author = {D.J. Hartfiel}, title = {Concerning the {Solution} {Set} of {Ax} = b where {P<} {A} < {Q} and p < b < q.}, journal = {Numerische Mathematik}, pages = {355--360}, publisher = {mathdoc}, volume = {35}, year = {1980}, url = {http://geodesic.mathdoc.fr/item/NUMA_1980__35_186295/} }
D.J. Hartfiel. Concerning the Solution Set of Ax = b where P< A < Q and p < b < q.. Numerische Mathematik, Tome 35 (1980), pp. 355-360. http://geodesic.mathdoc.fr/item/NUMA_1980__35_186295/