@article{GDZPPN002436167, title = {The Corona Theorem for Matrices.}, journal = {Mathematische Zeitschrift}, volume = {202}, year = {1989}, pages = {121-130}, zbl = {0648.30039}, url = {http://dml.mathdoc.fr/item/GDZPPN002436167} }
Andersson, Mats. The Corona Theorem for Matrices.. Mathematische Zeitschrift, Tome 202 (1989) pp. 121-130. http://gdmltest.u-ga.fr/item/GDZPPN002436167/