@article{IM_1970__10_142026,
     author = {Y.-C. LU},
     title = {Sufficiency of {Jets} in {Jr} (2,1) via {Decomposition}},
     journal = {Inventiones mathematicae},
     pages = {119--127},
     publisher = {mathdoc},
     volume = {10},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/IM_1970__10_142026/}
}