| article html file updated | 7 February 2020 09:43 CET | Update | https://www.mdpi.com/2075-4450/7/2/23 |
| article html file updated | 5 May 2019 13:47 CEST | Update | - |
| article html file updated | 27 March 2019 06:38 CET | Update | - |
| article html file updated | 4 July 2016 10:36 CEST | Update | - |
| article html file updated | 3 June 2016 11:01 CEST | Original file | - |
| article xml uploaded. | 3 June 2016 11:00 CEST | Original file | https://www.mdpi.com/2075-4450/7/2/23/xml |
| article pdf uploaded. | 3 June 2016 11:00 CEST | Version of Record | https://www.mdpi.com/2075-4450/7/2/23/pdf |
