  The oscillating probabilities of lepton flavor changing neutrino oscillation
processes, where neutrinos are detected by charged-current and neutral-current
interactions, are calculated in a quantum field-theoretical approach to
neutrino oscillations based on a modification of the Feynman propagator in the
momentum reprsentation. The approach is most similar to the standard Feynman
diagram technique in the momentum representation. It is found that the
oscillating distance-dependent probabilities of detecting an electron in
experiments with neutrino production in the muonic decay of $\pi^+$-meson and
the detection of the produced neutrino by charged-current and neutral-current
interactions exactly coincide with the corresponding probabilities calculated
in the standard approach.
