| article html file updated | 7 February 2020 01:27 CET | Update | https://www.mdpi.com/2078-1547/6/2/271 |
| article html file updated | 6 May 2019 06:33 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:12 CET | Original file | N/A |
| article xml uploaded. | 28 December 2015 09:08 CET | Update | https://www.mdpi.com/2078-1547/6/2/271/xml |
| article pdf uploaded. | 17 December 2015 10:34 CET | Updated version of record | https://www.mdpi.com/2078-1547/6/2/271/pdf |
| article pdf uploaded. | 27 November 2015 14:12 CET | Version of Record | https://www.mdpi.com/2078-1547/6/2/271/pdf-vor |
| article xml uploaded. | 27 November 2015 14:12 CET | Original file | N/A |
