| article html file updated | 8 February 2020 21:39 CET | Update | https://www.mdpi.com/2308-3417/2/4/37 |
| article html file updated | 2 May 2019 13:57 CEST | Update | - |
| article html file updated | 18 April 2019 11:36 CEST | Update | - |
| article html file updated | 21 November 2017 11:18 CET | Original file | - |
| article xml uploaded. | 21 November 2017 11:17 CET | Original file | https://www.mdpi.com/2308-3417/2/4/37/xml |
| article pdf uploaded. | 21 November 2017 11:17 CET | Updated version of record | https://www.mdpi.com/2308-3417/2/4/37/pdf |
| article pdf uploaded. | 20 November 2017 12:09 CET | Version of Record | https://www.mdpi.com/2308-3417/2/4/37/pdf-vor |
