Search for: [Subject and Keywords = Matematyka \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Matematyka \-\- zastosowania naukowe \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Matematyka \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Matematyka \-\- zastosowania naukowe \-\- czasopisma. \[KABA\]] OR [Title = Characterization of optimal polynomial and rational starting approximations] OR [Title = Characterization of optimal polynomial and rational starting approximations] OR [Creator = Smarzewski, Ryszard] OR [Creator = Smarzewski, Ryszard]