@article{1193758710, author = {Van Der Laan, Mark J.}, title = {An identity for the nonparametric maximum likelihood estimator in missing data and biased sampling models}, journal = {Bernoulli}, volume = {1}, number = {3}, year = {1995}, pages = { 335-341}, language = {en}, url = {http://dml.mathdoc.fr/item/1193758710} }
Van Der Laan, Mark J. An identity for the nonparametric maximum likelihood estimator in missing data and biased sampling models. Bernoulli, Tome 1 (1995) no. 3, pp. 335-341. http://gdmltest.u-ga.fr/item/1193758710/