| article html file updated | 7 February 2020 10:14 CET | Update | https://www.mdpi.com/2073-8994/8/6/48 |
| article html file updated | 5 May 2019 12:50 CEST | Update | - |
| article html file updated | 27 March 2019 07:36 CET | Update | - |
| article html file updated | 1 July 2016 10:33 CEST | Update | - |
| article html file updated | 15 June 2016 11:56 CEST | Original file | - |
| article xml uploaded. | 15 June 2016 11:55 CEST | Original file | https://www.mdpi.com/2073-8994/8/6/48/xml |
| article pdf uploaded. | 15 June 2016 11:55 CEST | Version of Record | https://www.mdpi.com/2073-8994/8/6/48/pdf |
