| article html file updated | 10 February 2020 04:30 CET | Update | https://www.mdpi.com/2226-4787/6/3/81 |
| article html file updated | 6 October 2019 08:10 CEST | Update | - |
| article html file updated | 29 April 2019 19:59 CEST | Update | - |
| article html file updated | 15 April 2019 15:08 CEST | Update | - |
| article html file updated | 31 March 2019 05:02 CEST | Update | - |
| article html file updated | 22 September 2018 11:09 CEST | Update | - |
| article html file updated | 4 August 2018 08:02 CEST | Original file | - |
| article pdf uploaded. | 4 August 2018 08:00 CEST | Version of Record | https://www.mdpi.com/2226-4787/6/3/81/pdf |
| article xml uploaded. | 4 August 2018 08:00 CEST | Update | https://www.mdpi.com/2226-4787/6/3/81/xml |
| article xml file uploaded | 4 August 2018 08:00 CEST | Original file | - |
