  Hadronic resonance production plays an important role both in elementary and
in nucleus-nucleus collisions. In heavy-ion collisions, since the lifetimes of
short-lived resonances are comparable with the lifetime of the late hadronic
phase, regeneration and rescattering effects become important and ratios of
yields of resonances relative to those of longer lived particles can be used to
estimate the time interval between the chemical and kinetic freeze-out. The
measurements in pp and p--Pb collisions constitute a reference for nuclear
collisions and provide information for tuning event generators inspired by
Quantum Chromodynamics.
