%0 Journal Article %A AGAFONOV, S. I. %T DISCRETE RICCATI EQUATION, HYPERGEOMETRIC FUNCTIONS AND CIRCLE PATTERNS OF SCHRAMM TYPE %J Glasgow mathematical journal %D 2005 %P 1-16 %V 47 %N A %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089505002247/ %R 10.1017/S0017089505002247 %F 10_1017_S0017089505002247