| article html file updated | 7 February 2020 10:29 CET | Update | https://www.mdpi.com/2227-7102/6/2/19 |
| article html file updated | 21 September 2019 19:26 CEST | Update | N/A |
| article html file updated | 5 May 2019 12:21 CEST | Update | N/A |
| article html file updated | 27 March 2019 08:02 CET | Update | N/A |
| article html file updated | 9 November 2017 12:38 CET | Update | N/A |
| article html file updated | 9 November 2017 10:19 CET | Update | N/A |
| article html file updated | 21 June 2016 09:04 CEST | Original file | N/A |
| article xml uploaded. | 21 June 2016 09:03 CEST | Original file | https://www.mdpi.com/2227-7102/6/2/19/xml |
| article pdf uploaded. | 21 June 2016 09:03 CEST | Version of Record | https://www.mdpi.com/2227-7102/6/2/19/pdf |
