| article html file updated | 8 February 2020 18:43 CET | Update | https://www.mdpi.com/2223-7747/6/4/49 |
| article html file updated | 27 September 2019 19:59 CEST | Update | - |
| article html file updated | 2 May 2019 20:40 CEST | Update | - |
| article html file updated | 2 January 2018 20:21 CET | Update | - |
| article html file updated | 20 October 2017 09:43 CEST | Update | - |
| article xml uploaded. | 20 October 2017 09:42 CEST | Update | https://www.mdpi.com/2223-7747/6/4/49/xml |
| article xml uploaded. | 20 October 2017 09:42 CEST | Update | - |
| article pdf uploaded. | 20 October 2017 09:42 CEST | Updated version of record | https://www.mdpi.com/2223-7747/6/4/49/pdf |
| article html file updated | 19 October 2017 23:11 CEST | Update | - |
| article xml uploaded. | 19 October 2017 08:01 CEST | Update | - |
| article pdf uploaded. | 19 October 2017 08:01 CEST | Updated version of record | https://www.mdpi.com/2223-7747/6/4/49/pdf-vor |
| article html file updated | 17 October 2017 23:06 CEST | Original file | - |
| article xml uploaded. | 17 October 2017 14:25 CEST | Update | - |
| article xml uploaded. | 17 October 2017 14:25 CEST | Original file | - |
| article pdf uploaded. | 17 October 2017 14:25 CEST | Version of Record | https://www.mdpi.com/2223-7747/6/4/49/pdf-vor |
