| article html file updated | 7 February 2020 08:19 CET | Update | https://www.mdpi.com/2073-431X/5/2/8 |
| article html file updated | 5 May 2019 16:32 CEST | Update | - |
| article html file updated | 27 March 2019 04:00 CET | Update | - |
| article html file updated | 28 June 2016 09:08 CEST | Update | - |
| article html file updated | 6 May 2016 13:02 CEST | Original file | - |
| article xml uploaded. | 6 May 2016 13:00 CEST | Original file | https://www.mdpi.com/2073-431X/5/2/8/xml |
| article pdf uploaded. | 6 May 2016 13:00 CEST | Version of Record | https://www.mdpi.com/2073-431X/5/2/8/pdf |
