%0 Journal Article %A Paweł Wójcik %T Generalized Daugavet equations, affine operators and unique best approximation %J Studia Mathematica %D 2017 %P 235-247 %V 238 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm8635-12-2016/ %R 10.4064/sm8635-12-2016 %G en %F 10_4064_sm8635_12_2016