| article html file updated | 8 February 2020 07:41 CET | Update | https://www.mdpi.com/2071-1050/9/6/979 |
| article html file updated | 25 September 2019 05:22 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:35 CEST | Update | N/A |
| article html file updated | 28 June 2017 14:42 CEST | Update | N/A |
| article html file updated | 8 June 2017 07:59 CEST | Original file | N/A |
| article xml uploaded. | 8 June 2017 07:58 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/979/xml |
| article pdf uploaded. | 8 June 2017 07:58 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/979/pdf |
| article pdf uploaded. | 7 June 2017 12:23 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/979/pdf-vor |
