@article{ASENS_1983_4_16_1_91_0,
     author = {Usui, Sampei},
     title = {Variation of mixed {Hodge} structures arising from family of logarithmic deformations},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {91--107},
     publisher = {Elsevier},
     volume = {Ser. 4, 16},
     number = {1},
     year = {1983},
     doi = {10.24033/asens.1441},
     zbl = {0516.14006},
     mrnumber = {719764},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/asens.1441/}
}