@article{10_4064_am_19_2_241_256,
     author = {L. Gajek},
     title = {An improper {Cramer-Rao} lower bound},
     journal = {Applicationes Mathematicae},
     pages = {241--256},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1987},
     doi = {10.4064/am-19-2-241-256},
     zbl = {0644.62027},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-19-2-241-256/}
}