@article{BSMF_2019__147_4_545_0,
     author = {Franchi, Jacques},
     title = {Small time equivalents for the density of a planar quadratic {Langevin} diffusion},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {545--606},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {147},
     number = {4},
     year = {2019},
     doi = {10.24033/bsmf.2792},
     mrnumber = {4057711},
     zbl = {1460.58020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.24033/bsmf.2792/}
}