| article html file updated | 7 February 2020 19:41 CET | Update | https://www.mdpi.com/2306-5338/3/4/44 |
| article html file updated | 22 September 2019 11:56 CEST | Update | - |
| article html file updated | 4 May 2019 19:02 CEST | Update | - |
| article html file updated | 15 December 2016 16:39 CET | Original file | - |
| article xml uploaded. | 15 December 2016 16:38 CET | Update | https://www.mdpi.com/2306-5338/3/4/44/xml |
| article xml uploaded. | 15 December 2016 16:38 CET | Original file | - |
| article pdf uploaded. | 15 December 2016 16:38 CET | Version of Record | https://www.mdpi.com/2306-5338/3/4/44/pdf |
