List the authors of the paper 'Group topic-author model for efficient discovery of latent social astroturfing groups in tourism domain'.
'Group topic-author model for efficient discovery of latent social astroturfing groups in tourism domain' was authored by which authors?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/cybersec/AlallaqAH19> <https://dblp.org/rdf/schema#authoredBy> ?answer }
<https://dblp.org/rec/journals/cybersec/AlallaqAH19>