The paper 'Distributed Leader Following of an Active Leader in Formation for Heterogeneous Multi-Agent Systems' has how many authors?
How many authors does 'Distributed Leader Following of an Active Leader in Formation for Heterogeneous Multi-Agent Systems' have?
SELECT ?answer WHERE { <https://dblp.org/rec/journals/corr/abs-1909-08008> <https://dblp.org/rdf/schema#numberOfCreators> ?answer }
<https://dblp.org/rec/journals/corr/abs-1909-08008>