| article html file updated | 7 February 2020 15:33 CET | Update | https://www.mdpi.com/1999-4893/9/4/64 |
| article html file updated | 29 September 2019 08:09 CEST | Update | N/A |
| article html file updated | 5 May 2019 03:05 CEST | Update | N/A |
| article html file updated | 28 December 2016 05:10 CET | Update | N/A |
| article html file updated | 26 September 2016 11:10 CEST | Original file | N/A |
| article xml uploaded. | 26 September 2016 11:09 CEST | Original file | https://www.mdpi.com/1999-4893/9/4/64/xml |
| article pdf uploaded. | 26 September 2016 11:09 CEST | Version of Record | https://www.mdpi.com/1999-4893/9/4/64/pdf |
