Correction to "The classification of the surfaces with parallel mean   curvature vector in two-dimensional complex space forms"
  We give a condition under which the findings of the paper cited above work well and determine the surfaces that were not considered before. In this paper, we show that a parallel mean curvature surface of a general type in a complex two-dimensional complex space form depends on one real-valued harmonic function on the surface and five real constants if the ambient space is not flat, the mean curvature vector does not vanish, and the Kaehler angle is not constant. 
K. Kenmotsu (Tohoku University)
math.DG