Paper submitted to journal, 2020-07-04

Final version of the paper submitted for journal publication, 2020-07-04

Presentation presented on conference, 2020-06-05

The version of presentation actually presented during the talk, 2020-06-05

Presentation submitted to conference, 2020-05-15

Version including the presentation submitted to the conference organizers, 2020-05-15

Version submitted to conference, 2020-04-24

The version that was sent with the conference registration.