@article{urn:eudml:doc:38770, title = {Some counterexamples concerning sufficiency and invariance.}, journal = {Extracta Mathematicae}, volume = {10}, year = {1995}, pages = {52-55}, zbl = {0900.62038}, mrnumber = {MR1359592}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38770} }
Berk, R. H.; Nogales, A. G.; Oyola, J. A. Some counterexamples concerning sufficiency and invariance.. Extracta Mathematicae, Tome 10 (1995) pp. 52-55. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38770/