TY - JOUR AU - Benz, Walter TI - On a functional equation arising from hyperbolic geometry. JO - Aequationes mathematicae PY - 1980 VL - 21 SP - 113 EP - 119 KW - functional equation; commutative local ring; maximal ideal; ordered; bijections; matrices; hyperbolic geometry; isometries; neighbour elements; Cayley-Klein model UR - http://eudml.org/doc/182422 ER -