| article html file updated | 7 February 2020 23:51 CET | Update | https://www.mdpi.com/2071-1050/9/2/308 |
| article html file updated | 23 September 2019 10:33 CEST | Update | - |
| article html file updated | 4 May 2019 10:20 CEST | Update | - |
| article html file updated | 1 March 2017 10:44 CET | Update | - |
| article html file updated | 21 February 2017 05:04 CET | Original file | - |
| article xml uploaded. | 21 February 2017 05:03 CET | Original file | https://www.mdpi.com/2071-1050/9/2/308/xml |
| article pdf uploaded. | 21 February 2017 05:03 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/308/pdf |
