| article html file updated | 7 February 2020 16:57 CET | Update | https://www.mdpi.com/2218-273X/6/4/41 |
| article html file updated | 5 May 2019 00:30 CEST | Update | N/A |
| article html file updated | 29 December 2016 04:28 CET | Update | N/A |
| article html file updated | 25 October 2016 12:37 CEST | Original file | N/A |
| article xml uploaded. | 25 October 2016 12:36 CEST | Update | https://www.mdpi.com/2218-273X/6/4/41/xml |
| article xml uploaded. | 25 October 2016 12:36 CEST | Original file | N/A |
| article pdf uploaded. | 25 October 2016 12:36 CEST | Version of Record | https://www.mdpi.com/2218-273X/6/4/41/pdf |
