| article html file updated | 8 February 2020 20:25 CET | Update | https://www.mdpi.com/2226-4787/5/4/62 |
| article html file updated | 28 September 2019 06:22 CEST | Update | - |
| article html file updated | 2 May 2019 16:46 CEST | Update | - |
| article html file updated | 2 January 2018 14:25 CET | Update | - |
| article html file updated | 7 November 2017 14:05 CET | Original file | - |
| article xml uploaded. | 7 November 2017 14:03 CET | Original file | https://www.mdpi.com/2226-4787/5/4/62/xml |
| article pdf uploaded. | 7 November 2017 14:03 CET | Updated version of record | https://www.mdpi.com/2226-4787/5/4/62/pdf |
| article pdf uploaded. | 6 November 2017 10:04 CET | Version of Record | https://www.mdpi.com/2226-4787/5/4/62/pdf-vor |
