| article html file updated | 7 February 2020 16:15 CET | Update | https://www.mdpi.com/2078-2489/7/4/57 |
| article html file updated | 22 September 2019 02:40 CEST | Update | - |
| article html file updated | 5 May 2019 01:50 CEST | Update | - |
| article html file updated | 29 December 2016 11:04 CET | Update | - |
| article html file updated | 13 October 2016 09:31 CEST | Original file | - |
| article xml uploaded. | 13 October 2016 09:30 CEST | Original file | https://www.mdpi.com/2078-2489/7/4/57/xml |
| article pdf uploaded. | 13 October 2016 09:30 CEST | Version of Record | https://www.mdpi.com/2078-2489/7/4/57/pdf |
