| article html file updated | 8 February 2020 02:24 CET | Update | https://www.mdpi.com/2073-8994/9/4/49 |
| article html file updated | 24 September 2019 01:04 CEST | Update | - |
| article html file updated | 4 May 2019 04:43 CEST | Update | - |
| article html file updated | 28 April 2017 07:14 CEST | Update | - |
| article html file updated | 29 March 2017 08:45 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 08:43 CEST | Original file | https://www.mdpi.com/2073-8994/9/4/49/xml |
| article pdf uploaded. | 29 March 2017 08:43 CEST | Updated version of record | https://www.mdpi.com/2073-8994/9/4/49/pdf |
| article pdf uploaded. | 28 March 2017 12:17 CEST | Version of Record | https://www.mdpi.com/2073-8994/9/4/49/pdf-vor |
