  We revisit Wu and Zou non-standard quasi-monotonicity approach for proving
existence of monotone wavefronts in monostable reaction-diffusion equations
with delays. This allows to solve the problem of existence of monotone
wavefronts in a neutral KPP-Fisher equation. In addition, using some new ideas
proposed recently by Solar et al., we establish the uniqueness (up to a
translation) of these monotone wavefronts.
