| article html file updated | 8 February 2020 06:37 CET | Update | https://www.mdpi.com/2072-6694/9/6/54 |
| article html file updated | 24 September 2019 23:52 CEST | Update | - |
| article html file updated | 3 May 2019 20:34 CEST | Update | - |
| article html file updated | 27 June 2017 09:56 CEST | Update | - |
| article html file updated | 31 May 2017 12:36 CEST | Update | - |
| article xml uploaded. | 31 May 2017 12:34 CEST | Update | https://www.mdpi.com/2072-6694/9/6/54/xml |
| article pdf uploaded. | 31 May 2017 12:34 CEST | Updated version of record | https://www.mdpi.com/2072-6694/9/6/54/pdf |
| article html file updated | 24 May 2017 16:07 CEST | Original file | - |
| article pdf uploaded. | 24 May 2017 16:06 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/6/54/pdf-vor |
