Book74'

@inproceedings{DBLP:conf/icalp/Book74,
  author    = {Ronald V. Book},
  title     = {On the Structure of Complexity Classes},
  booktitle = {ICALP},
  year      = {1974},
  pages     = {437-445},
  ee        = {http://dx.doi.org/10.1007/3-540-06841-4_80},
  crossref  = {DBLP:conf/icalp/1974},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/icalp/1974,
  editor    = {Jacques Loeckx},
  title     = {Automata, Languages and Programming, 2nd Colloquium, University
               of Saarbr{\"u}cken, July 29 - August 2, 1974, Proceedings},
  booktitle = {ICALP},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {14},
  year      = {1974},
  isbn      = {3-540-06841-4},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}