| article html file updated | 8 February 2020 03:37 CET | Update | https://www.mdpi.com/2073-8994/9/4/55 |
| article html file updated | 24 September 2019 07:57 CEST | Update | - |
| article html file updated | 4 May 2019 02:09 CEST | Update | - |
| article html file updated | 28 April 2017 07:16 CEST | Update | - |
| article html file updated | 14 April 2017 14:00 CEST | Update | - |
| article html file updated | 14 April 2017 13:59 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 13:58 CEST | Update | https://www.mdpi.com/2073-8994/9/4/55/xml |
| article pdf uploaded. | 14 April 2017 13:58 CEST | Updated version of record | https://www.mdpi.com/2073-8994/9/4/55/pdf |
| article pdf uploaded. | 14 April 2017 13:57 CEST | Version of Record | https://www.mdpi.com/2073-8994/9/4/55/pdf-vor |
