| article html file updated | 7 February 2020 18:46 CET | Update | https://www.mdpi.com/2223-7747/5/4/41 |
| article html file updated | 22 September 2019 07:32 CEST | Update | N/A |
| article html file updated | 4 May 2019 21:02 CEST | Update | N/A |
| article html file updated | 29 December 2016 06:48 CET | Update | N/A |
| article html file updated | 29 November 2016 12:57 CET | Original file | N/A |
| article xml uploaded. | 29 November 2016 12:55 CET | Update | https://www.mdpi.com/2223-7747/5/4/41/xml |
| article xml uploaded. | 29 November 2016 12:55 CET | Original file | N/A |
| article pdf uploaded. | 29 November 2016 12:55 CET | Version of Record | https://www.mdpi.com/2223-7747/5/4/41/pdf |
