| article html file updated | 7 February 2020 21:15 CET | Update | https://www.mdpi.com/2076-3263/7/1/2 |
| article html file updated | 4 May 2019 15:49 CEST | Update | - |
| article html file updated | 25 July 2017 10:20 CEST | Update | - |
| article html file updated | 11 January 2017 16:25 CET | Original file | - |
| article xml uploaded. | 11 January 2017 16:23 CET | Update | https://www.mdpi.com/2076-3263/7/1/2/xml |
| article xml uploaded. | 11 January 2017 16:23 CET | Original file | - |
| article pdf uploaded. | 11 January 2017 16:22 CET | Version of Record | https://www.mdpi.com/2076-3263/7/1/2/pdf |
