| article html file updated | 8 February 2020 05:13 CET | Update | https://www.mdpi.com/2411-5150/1/2/13 |
| article html file updated | 24 September 2019 16:33 CEST | Update | - |
| article html file updated | 3 May 2019 23:13 CEST | Update | - |
| article html file updated | 23 May 2017 03:48 CEST | Update | - |
| article html file updated | 8 May 2017 08:01 CEST | Original file | - |
| article xml uploaded. | 8 May 2017 07:59 CEST | Original file | https://www.mdpi.com/2411-5150/1/2/13/xml |
| article pdf uploaded. | 8 May 2017 07:59 CEST | Updated version of record | https://www.mdpi.com/2411-5150/1/2/13/pdf |
| article pdf uploaded. | 6 May 2017 11:38 CEST | Version of Record | https://www.mdpi.com/2411-5150/1/2/13/pdf-vor |
