| article html file updated | 7 February 2020 06:22 CET | Update | https://www.mdpi.com/2071-1050/8/4/277 |
| article html file updated | 5 May 2019 20:30 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:16 CET | Update | N/A |
| article html file updated | 29 April 2016 05:37 CEST | Update | N/A |
| article html file updated | 25 March 2016 02:33 CET | Original file | N/A |
| article xml uploaded. | 25 March 2016 02:31 CET | Original file | https://www.mdpi.com/2071-1050/8/4/277/xml |
| article pdf uploaded. | 25 March 2016 02:31 CET | Version of Record | https://www.mdpi.com/2071-1050/8/4/277/pdf |
