2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/110385We give a constructive and flexible proof of a result of P. Gorkin and R. Mortini concerning a special finite interpolation problem on the unit circle with interpolating Blaschke products. Our proof also shows that the result can be generalized to other closed curves than the unit circle.10 pages, 5 figuresClassical Analysis and ODEs30D50; 30E05text