%0 Journal Article %A Petar Melentijevic %T Invariant gradient in refinements of Schwarz and Harnack inequalities %J Annales Fennici Mathematici %D 2018 %P 391-399 %V 43 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2018.4324/ %R 10.5186/aasfm.2018.4324 %G en %F AFM_2018_43_1_a21