@article{MS2_1968__22_166043,
     author = {O., Pedersen, K. Barndorff-Nielsen},
     title = {Sufficient {Data} {Reduction} and {Exponential} {Families.}},
     journal = {Mathematica Scandinavica},
     pages = {197--202},
     publisher = {mathdoc},
     volume = {22},
     year = {1968},
     zbl = {0249.62018},
     url = {http://geodesic.mathdoc.fr/item/MS2_1968__22_166043/}
}