| article html file updated | 7 February 2020 02:47 CET | Update | https://www.mdpi.com/2071-1050/8/1/24 |
| article html file updated | 6 May 2019 03:48 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:22 CET | Original file | N/A |
| article pdf uploaded. | 26 December 2015 10:21 CET | Version of Record | https://www.mdpi.com/2071-1050/8/1/24/pdf |
| article xml uploaded. | 26 December 2015 10:21 CET | Original file | https://www.mdpi.com/2071-1050/8/1/24/xml |
