| article html file updated | 9 February 2020 03:35 CET | Update | https://www.mdpi.com/2227-7102/8/1/17 |
| article html file updated | 30 September 2019 01:14 CEST | Update | - |
| article html file updated | 2 May 2019 01:10 CEST | Update | - |
| article html file updated | 17 April 2019 23:31 CEST | Update | - |
| article html file updated | 28 March 2019 16:45 CET | Update | - |
| article html file updated | 27 March 2018 15:18 CEST | Update | - |
| article html file updated | 19 January 2018 05:23 CET | Original file | - |
| article xml uploaded. | 19 January 2018 05:22 CET | Update | https://www.mdpi.com/2227-7102/8/1/17/xml |
| article xml uploaded. | 19 January 2018 05:22 CET | Original file | - |
| article pdf uploaded. | 19 January 2018 05:22 CET | Version of Record | https://www.mdpi.com/2227-7102/8/1/17/pdf |
