| article html file updated | 7 February 2020 11:57 CET | Update | https://www.mdpi.com/2227-7072/4/3/15 |
| article html file updated | 5 May 2019 09:41 CEST | Update | - |
| article html file updated | 27 March 2019 10:47 CET | Update | - |
| article html file updated | 28 September 2016 10:53 CEST | Update | - |
| article html file updated | 20 July 2016 14:30 CEST | Original file | - |
| article xml uploaded. | 20 July 2016 14:29 CEST | Original file | https://www.mdpi.com/2227-7072/4/3/15/xml |
| article pdf uploaded. | 20 July 2016 14:29 CEST | Version of Record | https://www.mdpi.com/2227-7072/4/3/15/pdf |
