| article html file updated | 7 February 2020 09:55 CET | Update | https://www.mdpi.com/1420-3049/21/6/751 |
| article html file updated | 21 September 2019 18:43 CEST | Update | - |
| article html file updated | 5 May 2019 13:25 CEST | Update | - |
| article html file updated | 27 March 2019 07:02 CET | Update | - |
| article html file updated | 12 November 2018 04:24 CET | Update | - |
| article html file updated | 29 June 2016 11:59 CEST | Update | - |
| article html file updated | 8 June 2016 10:49 CEST | Original file | - |
| article xml uploaded. | 8 June 2016 10:48 CEST | Update | https://www.mdpi.com/1420-3049/21/6/751/xml |
| article pdf uploaded. | 8 June 2016 10:48 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/6/751/pdf |
