| article html file updated | 7 February 2020 23:53 CET | Update | https://www.mdpi.com/2073-4360/9/2/74 |
| article html file updated | 4 May 2019 10:16 CEST | Update | - |
| article html file updated | 20 March 2019 06:42 CET | Update | - |
| article html file updated | 1 March 2017 11:17 CET | Update | - |
| article html file updated | 22 February 2017 10:28 CET | Original file | - |
| article xml uploaded. | 22 February 2017 10:26 CET | Original file | https://www.mdpi.com/2073-4360/9/2/74/xml |
| article pdf uploaded. | 22 February 2017 10:26 CET | Updated version of record | https://www.mdpi.com/2073-4360/9/2/74/pdf |
| article pdf uploaded. | 21 February 2017 10:34 CET | Version of Record | https://www.mdpi.com/2073-4360/9/2/74/pdf-vor |
