@article{IM_1973__20_142212,
     author = {B. Malgrange},
     title = {Letter to the {Editors.}},
     journal = {Inventiones mathematicae},
     pages = {171--172},
     publisher = {mathdoc},
     volume = {20},
     year = {1973},
     zbl = {0264.14003},
     url = {http://geodesic.mathdoc.fr/item/IM_1973__20_142212/}
}