| article html file updated | 8 February 2020 07:05 CET | Update | https://www.mdpi.com/2071-1050/9/6/915 |
| article html file updated | 25 September 2019 02:19 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:42 CEST | Update | N/A |
| article html file updated | 28 June 2017 14:35 CEST | Update | N/A |
| article html file updated | 31 May 2017 12:04 CEST | Original file | N/A |
| article xml uploaded. | 31 May 2017 12:03 CEST | Update | https://www.mdpi.com/2071-1050/9/6/915/xml |
| article pdf uploaded. | 31 May 2017 12:03 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/915/pdf |
