How many papers did the authors of 'Security versus performance tradeoffs in RPC implementations for safe language systems' publish in 1998?
In 1998, how many papers did the authors of 'Security versus performance tradeoffs in RPC implementations for safe language systems' publish?
SELECT DISTINCT (COUNT(?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/sigopsE/ChangCHHE98> <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#yearOfPublication> '1998' }
<https://dblp.org/rec/conf/sigopsE/ChangCHHE98>