| article html file updated | 9 February 2020 17:45 CET | Update | https://www.mdpi.com/2227-9059/6/2/57 |
| article html file updated | 3 October 2019 15:17 CEST | Update | - |
| article html file updated | 30 April 2019 19:31 CEST | Update | - |
| article html file updated | 16 April 2019 19:57 CEST | Update | - |
| article html file updated | 30 March 2019 01:10 CET | Update | - |
| article html file updated | 27 June 2018 19:16 CEST | Update | - |
| article html file updated | 16 May 2018 07:54 CEST | Original file | - |
| article pdf uploaded. | 16 May 2018 07:53 CEST | Version of Record | https://www.mdpi.com/2227-9059/6/2/57/pdf |
| article xml uploaded. | 16 May 2018 07:53 CEST | Update | https://www.mdpi.com/2227-9059/6/2/57/xml |
| article xml file uploaded | 16 May 2018 07:53 CEST | Original file | - |
