@article{IM_1972__16_142150,
     author = {R.K. Getoor and M.J. Sharpe},
     title = {Conformal {Martingales.}},
     journal = {Inventiones mathematicae},
     pages = {271--308},
     publisher = {mathdoc},
     volume = {16},
     year = {1972},
     zbl = {0268.60048},
     url = {http://geodesic.mathdoc.fr/item/IM_1972__16_142150/}
}