Bose-Einstein correlations in the invariant Q2 variable and intermittency

The dependence of two-particle Bose-Einstein correlations on the squared invariant momentum difference Q2 has been calculated in several models with fixed space-time sizes of the pion source. The complex relationship between the apparent radius and incoherence factor of the source measured with the help of Q, and the ''true'' radii and incoherence factors is established. The resulting correlation functions have a sharp and approximately powerlike peak at small Q in agreement with preliminary data of the UA1 Collaboration. The appearance of this powerlike peak at small Q due to the kinematics of the Q variable imples that the observed Q dependence does not necessarily constitute evidence either for intermittency or for a fractal nature of the source