| article html file updated | 7 February 2020 21:10 CET | Update | https://www.mdpi.com/1999-4915/9/1/5 |
| article html file updated | 22 September 2019 19:52 CEST | Update | - |
| article html file updated | 4 May 2019 15:59 CEST | Update | - |
| article html file updated | 7 February 2017 12:21 CET | Update | - |
| article html file updated | 10 January 2017 14:56 CET | Original file | - |
| article xml uploaded. | 10 January 2017 14:55 CET | Original file | https://www.mdpi.com/1999-4915/9/1/5/xml |
| article pdf uploaded. | 10 January 2017 14:55 CET | Version of Record | https://www.mdpi.com/1999-4915/9/1/5/pdf |
