An operator approach to multipoint Padé approximations. - Maxim S. Derevyagin; Alexei S. Zhedanov (J. Approx. Theory, 2009)

The linear pencil approach to rational interpolation. - Bernhard Beckermann; Maxim S. Derevyagin; Alexei S. Zhedanov (J. Approx. Theory, 2010)