| article html file updated | 8 February 2020 06:46 CET | Update | https://www.mdpi.com/2072-6694/9/6/58 |
| article html file updated | 25 September 2019 00:44 CEST | Update | - |
| article html file updated | 3 May 2019 20:17 CEST | Update | - |
| article html file updated | 27 June 2017 09:57 CEST | Update | - |
| article html file updated | 31 May 2017 03:36 CEST | Original file | - |
| article xml uploaded. | 31 May 2017 03:35 CEST | Original file | https://www.mdpi.com/2072-6694/9/6/58/xml |
| article pdf uploaded. | 31 May 2017 03:35 CEST | Updated version of record | https://www.mdpi.com/2072-6694/9/6/58/pdf |
| article pdf uploaded. | 26 May 2017 10:58 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/6/58/pdf-vor |
