%0 Journal Article %A Lappan, P. %A Rung, D. C. %T Normal Functions and Non-Tangential Boundary Arcs %J Canadian journal of mathematics %D 1966 %P 256-264 %V 18 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1966-028-9/ %R 10.4153/CJM-1966-028-9 %F 10_4153_CJM_1966_028_9