Vladimir Bolotnikov Stephen P. Cameron The Nevanlinna-Pick problem on the closed unit disk: Minimal norm rational solutions of low degree. 3123-3136 2012 236 J. Computational Applied Mathematics 13 http://dx.doi.org/10.1016/j.cam.2012.02.009 db/journals/jcam/jcam236.html#BolotnikovC12