| article html file updated | 7 February 2020 06:36 CET | Update | https://www.mdpi.com/2079-3197/4/2/17 |
| article html file updated | 5 May 2019 20:01 CEST | Update | - |
| article html file updated | 27 March 2019 00:39 CET | Update | - |
| article html file updated | 28 June 2016 09:07 CEST | Update | - |
| article html file updated | 30 March 2016 09:26 CEST | Original file | - |
| article xml uploaded. | 30 March 2016 09:24 CEST | Original file | https://www.mdpi.com/2079-3197/4/2/17/xml |
| article pdf uploaded. | 30 March 2016 09:24 CEST | Version of Record | https://www.mdpi.com/2079-3197/4/2/17/pdf |
