Nonparametric estimators of solutions of renewal-type equations are
proposed in terms of the empirical renewal function. Using the approach of
Grübel and Pitts [Ann .Stat .21 1431 –1451 (1993)], who
studied asymptotic properties of the empirical renewal function, a number of
properties of our estimators are established, including strong consistency,
asymptotic normality and efficiency, and asymptotic validity of bootstrap
confidence bounds. The results are illustrated by some particular examples.