| article html file updated | 7 February 2020 20:19 CET | Update | https://www.mdpi.com/2227-7102/7/1/5 |
| article html file updated | 22 September 2019 15:14 CEST | Update | N/A |
| article html file updated | 4 May 2019 17:47 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:54 CEST | Update | N/A |
| article html file updated | 26 December 2016 11:20 CET | Original file | N/A |
| article xml uploaded. | 26 December 2016 11:19 CET | Original file | https://www.mdpi.com/2227-7102/7/1/5/xml |
| article pdf uploaded. | 26 December 2016 11:19 CET | Version of Record | https://www.mdpi.com/2227-7102/7/1/5/pdf |
