The paper 'LexBFS-Ordering in Asteroidal Triple-Free Graphs' was published in which year?
'LexBFS-Ordering in Asteroidal Triple-Free Graphs' was published in which year?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/isaac/ChangHK99> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/conf/isaac/ChangHK99>