On the generalized resolvents of isometric operators with gaps
  In this paper we obtain some slight correction and generalization of the results of Ryabtseva on the generalized resolvents for isometric operators with a gap in their spectrum. Also, analogs of some McKelvey's results and a short proof of Inin's formula for the generalized resolvents of an isometric operator are obtained. 
Sergey M. Zagorodnyuk
math.FA