| article html file updated | 7 February 2020 22:23 CET | Update | https://www.mdpi.com/2075-4426/7/1/2 |
| article html file updated | 23 September 2019 02:22 CEST | Update | - |
| article html file updated | 4 May 2019 13:17 CEST | Update | - |
| article html file updated | 31 March 2017 05:29 CEST | Update | - |
| article html file updated | 4 February 2017 11:40 CET | Original file | - |
| article xml uploaded. | 4 February 2017 11:39 CET | Original file | https://www.mdpi.com/2075-4426/7/1/2/xml |
| article pdf uploaded. | 4 February 2017 11:39 CET | Updated version of record | https://www.mdpi.com/2075-4426/7/1/2/pdf |
| article pdf uploaded. | 27 January 2017 17:16 CET | Version of Record | https://www.mdpi.com/2075-4426/7/1/2/pdf-vor |
