| article html file updated | 19 March 2020 10:05 CET | Original file | https://www.mdpi.com/1996-1073/13/6/1428 |
| article pdf uploaded. | 19 March 2020 10:04 CET | Version of Record | https://www.mdpi.com/1996-1073/13/6/1428/pdf |
| article xml uploaded. | 19 March 2020 10:04 CET | Update | https://www.mdpi.com/1996-1073/13/6/1428/xml |
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