@article{CM_1990__74_2_209_0,
     author = {Saito, Morihiko},
     title = {Extension of mixed {Hodge} modules},
     journal = {Compositio Mathematica},
     pages = {209--234},
     publisher = {Kluwer Academic Publishers},
     volume = {74},
     number = {2},
     year = {1990},
     mrnumber = {1047741},
     zbl = {0726.14007},
     language = {en},
     url = {http://www.numdam.org/item/CM_1990__74_2_209_0/}
}