| article html file updated | 8 February 2020 02:30 CET | Update | https://www.mdpi.com/2072-6651/9/4/123 |
| article html file updated | 24 September 2019 01:41 CEST | Update | - |
| article html file updated | 4 May 2019 04:28 CEST | Update | - |
| article html file updated | 28 April 2017 11:14 CEST | Update | - |
| article html file updated | 31 March 2017 02:46 CEST | Original file | - |
| article xml uploaded. | 31 March 2017 02:45 CEST | Original file | https://www.mdpi.com/2072-6651/9/4/123/xml |
| article pdf uploaded. | 31 March 2017 02:45 CEST | Updated version of record | https://www.mdpi.com/2072-6651/9/4/123/pdf |
| article pdf uploaded. | 29 March 2017 14:50 CEST | Version of Record | https://www.mdpi.com/2072-6651/9/4/123/pdf-vor |
