Borobia, A., R. Canogar, and H. Smigoc. “A Matrix Completion Problem over Integral Domains: The Case With 2n — 3 Prescribed Blocks”. Proyecciones (Antofagasta, On Line), vol. 33, no. 2, Mar. 2017, pp. 215-33, doi:10.4067/S0716-09172014000200007.