| article html file updated | 7 February 2020 22:27 CET | Update | https://www.mdpi.com/2079-8954/5/1/8 |
| article html file updated | 23 September 2019 02:45 CEST | Update | - |
| article html file updated | 4 May 2019 13:10 CEST | Update | - |
| article html file updated | 30 March 2017 09:02 CEST | Update | - |
| article html file updated | 9 February 2017 10:11 CET | Original file | - |
| article xml uploaded. | 9 February 2017 10:09 CET | Original file | https://www.mdpi.com/2079-8954/5/1/8/xml |
| article pdf uploaded. | 9 February 2017 10:09 CET | Updated version of record | https://www.mdpi.com/2079-8954/5/1/8/pdf |
| article pdf uploaded. | 29 January 2017 03:58 CET | Version of Record | https://www.mdpi.com/2079-8954/5/1/8/pdf-vor |
