@article{Dalla Zuanna1998,
author = {Dalla Zuanna, G. and Gavini, S. and Spinelli, A.},
title= {The effect of changing sexual, marital and contraceptive behaviour on conceptions, abortions, and births},
year = {1998},
doi = {10.1023/A:1006000814951},
volume = {14},
number = {1},
pages = {61--88},
}