@inproceedings {st:77,
    AUTHOR = {Steenbrink, J.H.M.},
     TITLE = {Mixed {H}odge structure on the vanishing cohomology},
 BOOKTITLE = {Real and complex singularities ({P}roc. {N}inth {N}ordic
              {S}ummer {S}chool/{NAVF} {S}ympos. {M}ath., {O}slo, 1976)},
     PAGES = {525--563},
 PUBLISHER = {Sijthoff and Noordhoff, Alphen aan den Rijn},
      YEAR = {1977},
}


@article {st:75,
    AUTHOR = {Steenbrink, J.H.M.},
     TITLE = {Limits of {H}odge structures},
   JOURNAL = {Invent. Math.},
  FJOURNAL = {Inventiones Mathematicae},
    VOLUME = {31},
      YEAR = {1975/76},
    NUMBER = {3},
     PAGES = {229--257},
      ISSN = {0020-9910},
       DOI = {10.1007/BF01403146},
       URL = {https://doi.org/10.1007/BF01403146},
}

@article {sch:73,
    AUTHOR = {Schmid, W.},
     TITLE = {Variation of {H}odge structure: the singularities of the
              period mapping},
   JOURNAL = {Invent. Math.},
  FJOURNAL = {Inventiones Mathematicae},
    VOLUME = {22},
      YEAR = {1973},
     PAGES = {211--319},
      ISSN = {0020-9910},
       DOI = {10.1007/BF01389674},
       URL = {https://doi.org/10.1007/BF01389674},
}