During the last years the zero-point vibrations associated with the ground-state correlations (g.s.c.) have received considerable attention (1). Most of this work, however, has been devoted to normal systems, i.e. nonsuperconducting ones. 0nly recently g.s.c. in superfluid nuclei have been studied in a rather detailed way (2-4). These investigations suggest that effects unambiguously attributable to g.s.c, should be very hard to observe. Stripping and pick-up processes might yield direct experimental evidence of g.s.e. However, opposite to what happens in the case of normal systems, the theoretical figures involved strongly indicate that neither in deformed heavy nuclei (3) nor in single-closed-shell ones (4) is the situation amenable to successful experimental study. <i>[Extracto a modo de resumen]</i>Facultad de Ciencias Exactas