| article html file updated | 7 February 2020 21:42 CET | Update | https://www.mdpi.com/2073-4425/8/1/38 |
| article html file updated | 22 September 2019 22:41 CEST | Update | - |
| article html file updated | 4 May 2019 14:41 CEST | Update | - |
| article html file updated | 7 February 2017 12:25 CET | Update | - |
| article html file updated | 18 January 2017 10:20 CET | Original file | - |
| article xml uploaded. | 18 January 2017 10:19 CET | Original file | https://www.mdpi.com/2073-4425/8/1/38/xml |
| article pdf uploaded. | 18 January 2017 10:19 CET | Version of Record | https://www.mdpi.com/2073-4425/8/1/38/pdf |
