| article html file updated | 8 February 2020 16:59 CET | Update | https://www.mdpi.com/2311-5521/2/4/49 |
| article html file updated | 3 May 2019 00:25 CEST | Update | - |
| article html file updated | 2 January 2018 12:30 CET | Update | - |
| article html file updated | 26 September 2017 03:51 CEST | Update | - |
| article xml uploaded. | 26 September 2017 03:50 CEST | Update | https://www.mdpi.com/2311-5521/2/4/49/xml |
| article pdf uploaded. | 26 September 2017 03:50 CEST | Updated version of record | https://www.mdpi.com/2311-5521/2/4/49/pdf |
| article html file updated | 23 September 2017 10:30 CEST | Original file | - |
| article xml uploaded. | 23 September 2017 10:29 CEST | Update | - |
| article xml uploaded. | 23 September 2017 10:29 CEST | Original file | - |
| article pdf uploaded. | 23 September 2017 10:29 CEST | Version of Record | https://www.mdpi.com/2311-5521/2/4/49/pdf-vor |
