Mention the years in which 'Combining Data Duplication and Graph Reordering to Accelerate Parallel Graph Processing' and 'Tutorial on \Switching and routing for spatially and spectrally flexible elastic optical networking\' were published.
When were 'Combining Data Duplication and Graph Reordering to Accelerate Parallel Graph Processing' and 'Tutorial on \Switching and routing for spatially and spectrally flexible elastic optical networking\' published?
SELECT DISTINCT ?answer WHERE { { <https://dblp.org/rec/conf/hpdc/BalajiL19> <https://dblp.org/rdf/schema#yearOfPublication> ?answer } UNION { <https://dblp.org/rec/conf/hpsr/Tomkos15> <https://dblp.org/rdf/schema#yearOfPublication> ?answer } }
<https://dblp.org/rec/conf/hpdc/BalajiL19> <https://dblp.org/rec/conf/hpsr/Tomkos15>