| article html file updated | 8 February 2020 23:23 CET | Update | https://www.mdpi.com/2071-1050/9/12/2270 |
| article html file updated | 2 May 2019 10:05 CEST | Update | - |
| article html file updated | 18 April 2019 07:44 CEST | Update | - |
| article html file updated | 2 January 2018 18:31 CET | Update | - |
| article html file updated | 7 December 2017 15:13 CET | Original file | - |
| article xml uploaded. | 7 December 2017 15:12 CET | Original file | https://www.mdpi.com/2071-1050/9/12/2270/xml |
| article pdf uploaded. | 7 December 2017 15:12 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/12/2270/pdf |
| article pdf uploaded. | 7 December 2017 10:10 CET | Version of Record | - |
