| article html file updated | 7 February 2020 08:52 CET | Update | https://www.mdpi.com/2076-0760/5/2/21 |
| article html file updated | 5 May 2019 15:30 CEST | Update | - |
| article html file updated | 27 March 2019 04:59 CET | Update | - |
| article html file updated | 18 May 2016 08:01 CEST | Original file | - |
| article xml uploaded. | 18 May 2016 08:00 CEST | Original file | https://www.mdpi.com/2076-0760/5/2/21/xml |
| article pdf uploaded. | 18 May 2016 08:00 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/2/21/pdf |
