In 1978, how many papers did the authors of 'An Approach to Cost Estimating for Planning and Design' publish?
How many papers did the authors of 'An Approach to Cost Estimating for Planning and Design' publish in 1978?
SELECT DISTINCT (COUNT(?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/jcit/SchildHL78> <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#yearOfPublication> '1978' }
<https://dblp.org/rec/conf/jcit/SchildHL78>