%0 Journal Article %A Backlund, Ulf %A Fällström, Anders %T On the algebra of $A^k$-functions %J Mathematica Bohemica %D 2006 %P 49-61 %V 131 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2006.134082/ %R 10.21136/MB.2006.134082 %G en %F 10_21136_MB_2006_134082