| article html file updated | 8 February 2020 22:37 CET | Update | https://www.mdpi.com/2227-9059/5/4/67 |
| article html file updated | 28 September 2019 20:31 CEST | Update | - |
| article html file updated | 2 May 2019 11:50 CEST | Update | - |
| article html file updated | 18 April 2019 09:26 CEST | Update | - |
| article html file updated | 2 January 2018 16:40 CET | Update | - |
| article html file updated | 5 December 2017 03:41 CET | Update | - |
| article xml uploaded. | 5 December 2017 03:40 CET | Update | https://www.mdpi.com/2227-9059/5/4/67/xml |
| article pdf uploaded. | 5 December 2017 03:40 CET | Updated version of record | https://www.mdpi.com/2227-9059/5/4/67/pdf |
| article html file updated | 29 November 2017 14:47 CET | Original file | - |
| article xml uploaded. | 29 November 2017 14:46 CET | Original file | - |
| article pdf uploaded. | 29 November 2017 14:46 CET | Version of Record | https://www.mdpi.com/2227-9059/5/4/67/pdf-vor |
