%0 Journal Article %A Jasna Prezelj %A Fabio Vlacci %T Divergence zero quaternionic vector fields and Hamming graphs %J Ars Mathematica Contemporanea %D 2020 %P 189-208 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.2033.974/ %R 10.26493/1855-3974.2033.974 %G en %F 10_26493_1855_3974_2033_974