[1] QB4ST: RDF Data Cube extensions for spatio-temporal components (2017-01-05 20:01:15 +09:00) <https://www.w3.org/TR/2017/NOTE-qb4st-20170105/>
[2] QB4ST: RDF Data Cube extensions for spatio-temporal components (2017-04-13 23:56:44 +09:00) <https://www.w3.org/TR/2017/NOTE-qb4st-20170418/>