| article html file updated | 7 February 2020 16:44 CET | Update | https://www.mdpi.com/2075-5309/6/4/45 |
| article html file updated | 22 September 2019 03:37 CEST | Update | N/A |
| article html file updated | 5 May 2019 00:56 CEST | Update | N/A |
| article html file updated | 29 December 2016 06:10 CET | Update | N/A |
| article html file updated | 21 October 2016 03:44 CEST | Original file | N/A |
| article xml uploaded. | 21 October 2016 03:43 CEST | Original file | https://www.mdpi.com/2075-5309/6/4/45/xml |
| article pdf uploaded. | 21 October 2016 03:43 CEST | Version of Record | https://www.mdpi.com/2075-5309/6/4/45/pdf |
