Find the years in which the authors of 'Some Research Problems in Automatic Information Retrieval' published other papers.
List the years in which the authors of 'Some Research Problems in Automatic Information Retrieval' published other papers.
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/sigir/Salton83> <https://dblp.org/rdf/schema#authoredBy> ?x . <https://dblp.org/rec/conf/sigir/Salton83> <https://dblp.org/rdf/schema#yearOfPublication> ?y . ?z <https://dblp.org/rdf/schema#authoredBy> ?x . ?z <https://dblp.org/rdf/schema#yearOfPublication> ?answer FILTER (?answer != ?y) }
<https://dblp.org/rec/conf/sigir/Salton83>