| article html file updated | 8 February 2020 08:34 CET | Update | https://www.mdpi.com/2218-1989/7/2/28 |
| article html file updated | 25 September 2019 09:51 CEST | Update | - |
| article html file updated | 3 May 2019 16:56 CEST | Update | - |
| article html file updated | 28 June 2017 13:53 CEST | Update | - |
| article html file updated | 19 June 2017 09:45 CEST | Original file | - |
| article xml uploaded. | 19 June 2017 09:44 CEST | Original file | https://www.mdpi.com/2218-1989/7/2/28/xml |
| article pdf uploaded. | 19 June 2017 09:44 CEST | Updated version of record | https://www.mdpi.com/2218-1989/7/2/28/pdf |
| article pdf uploaded. | 17 June 2017 12:07 CEST | Version of Record | https://www.mdpi.com/2218-1989/7/2/28/pdf-vor |
