Count the different affiliations of the authors of 'Measurement-based Massive-MIMO Channel Characterization for Outdoor LoS Scenarios'.
How many different affiliations do the authors of 'Measurement-based Massive-MIMO Channel Characterization for Outdoor LoS Scenarios' have?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/pimrc/HaoYRAZ18> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/conf/pimrc/HaoYRAZ18>