%0 Journal Article %A Peter J. Giblin %A Stanisław Janeczko, %A Maria Aparecida Ruas %T Reflexion maps and geometry of surfaces in R^4 %J Journal of Singularities %D 2020 %P 84-96 %V 21 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.21e/ %R 10.5427/jsing.2020.21e %F 10_5427_jsing_2020_21e