@inproceedings{DBLP:conf/sigopsE/Hartig90,
  author    = {Hermann H{\"a}rtig},
  title     = {Position statement},
  booktitle = {ACM SIGOPS European Workshop},
  year      = {1990},
  ee        = {http://doi.acm.org/10.1145/504136.504178},
  crossref  = {DBLP:conf/sigopsE/1990},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sigopsE/1990,
  title     = {Proceedings of the 4th ACM SIGOPS European Workshop, Bologna,
               Italy, September 3-5, 1990},
  booktitle = {ACM SIGOPS European Workshop},
  publisher = {ACM},
  year      = {1990},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}