| article html file updated | 8 February 2020 07:31 CET | Update | https://www.mdpi.com/2072-6694/9/6/63 |
| article html file updated | 25 September 2019 04:28 CEST | Update | - |
| article html file updated | 3 May 2019 18:53 CEST | Update | - |
| article html file updated | 27 June 2017 09:55 CEST | Update | - |
| article html file updated | 6 June 2017 10:18 CEST | Update | - |
| article xml uploaded. | 6 June 2017 10:17 CEST | Update | https://www.mdpi.com/2072-6694/9/6/63/xml |
| article pdf uploaded. | 6 June 2017 10:17 CEST | Updated version of record | https://www.mdpi.com/2072-6694/9/6/63/pdf |
| article html file updated | 5 June 2017 14:36 CEST | Original file | - |
| article pdf uploaded. | 5 June 2017 14:34 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/6/63/pdf-vor |
