Name the venue in which Peter published the paper about Cam technology.
In which venue did Winkler publish the paper about Cam technology?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/ifip5-7/Winkler91> <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/w/PeterWinkler> . <https://dblp.org/rec/conf/ifip5-7/Winkler91> <https://dblp.org/rdf/schema#publishedIn> ?answer }
<https://dblp.org/pid/w/PeterWinkler> <https://dblp.org/rec/conf/ifip5-7/Winkler91>