| article html file updated | 8 February 2020 11:58 CET | Update | https://www.mdpi.com/2227-9067/4/8/61 |
| article html file updated | 26 September 2019 03:55 CEST | Update | - |
| article html file updated | 3 May 2019 10:23 CEST | Update | - |
| article html file updated | 27 March 2019 17:36 CET | Update | - |
| article html file updated | 1 September 2017 08:25 CEST | Update | - |
| article html file updated | 26 July 2017 13:23 CEST | Original file | - |
| article xml uploaded. | 26 July 2017 13:22 CEST | Original file | https://www.mdpi.com/2227-9067/4/8/61/xml |
| article pdf uploaded. | 26 July 2017 13:22 CEST | Updated version of record | https://www.mdpi.com/2227-9067/4/8/61/pdf |
| article pdf uploaded. | 25 July 2017 15:23 CEST | Version of Record | https://www.mdpi.com/2227-9067/4/8/61/pdf-vor |
