%0 Journal Article %A Roland Zielke %T Concertina-Loke Movements of the Error Curve in the Alternation Theorem. %J Manuscripta mathematica %D 1977 %P 229-234 %V 22 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1977__22_154494/ %F MM2_1977__22_154494