| article html file updated | 7 February 2020 05:25 CET | Update | https://www.mdpi.com/2079-9276/5/1/15 |
| article html file updated | 5 May 2019 22:30 CEST | Update | - |
| article html file updated | 26 March 2019 22:30 CET | Update | - |
| article html file updated | 8 June 2016 06:41 CEST | Original file | - |
| article pdf uploaded. | 3 March 2016 10:57 CET | Version of Record | https://www.mdpi.com/2079-9276/5/1/15/pdf |
| article xml uploaded. | 3 March 2016 10:57 CET | Original file | https://www.mdpi.com/2079-9276/5/1/15/xml |
