| article html file updated | 7 February 2020 10:41 CET | Update | https://www.mdpi.com/2075-4450/7/2/28 |
| article html file updated | 5 May 2019 11:59 CEST | Update | - |
| article html file updated | 27 March 2019 08:23 CET | Update | - |
| article html file updated | 4 July 2016 10:36 CEST | Update | - |
| article html file updated | 24 June 2016 11:00 CEST | Original file | - |
| article xml uploaded. | 24 June 2016 10:59 CEST | Original file | https://www.mdpi.com/2075-4450/7/2/28/xml |
| article pdf uploaded. | 24 June 2016 10:59 CEST | Version of Record | https://www.mdpi.com/2075-4450/7/2/28/pdf |
