  Recent results on particle momentum and spin correlations are discussed,
particularly, in view of the role played by the effect of final state
interaction. It is demonstrated that this effect allows for (i) correlation
femtoscopy with unlike particles; (ii) study of the relative space--time
asymmetries in the production of different particle species (including relative
time delays); (iii) study of the particle strong interaction hardly accessible
by other means (e.g., in $\Lambda\Lambda$ system).
