| article html file updated | 7 February 2020 09:18 CET | Update | https://www.mdpi.com/2076-3425/6/2/17 |
| article html file updated | 5 May 2019 14:38 CEST | Update | - |
| article html file updated | 27 March 2019 05:48 CET | Update | - |
| article html file updated | 4 July 2016 06:21 CEST | Update | - |
| article html file updated | 26 May 2016 10:54 CEST | Original file | - |
| article xml uploaded. | 26 May 2016 10:53 CEST | Update | https://www.mdpi.com/2076-3425/6/2/17/xml |
| article pdf uploaded. | 26 May 2016 10:53 CEST | Version of Record | https://www.mdpi.com/2076-3425/6/2/17/pdf |
