| article html file updated | 8 February 2020 23:57 CET | Update | https://www.mdpi.com/2071-1050/9/12/2321 |
| article html file updated | 29 September 2019 04:27 CEST | Update | N/A |
| article html file updated | 2 May 2019 08:50 CEST | Update | N/A |
| article html file updated | 18 April 2019 06:36 CEST | Update | N/A |
| article html file updated | 2 January 2018 19:05 CET | Update | N/A |
| article html file updated | 13 December 2017 11:01 CET | Original file | N/A |
| article xml uploaded. | 13 December 2017 11:00 CET | Update | https://www.mdpi.com/2071-1050/9/12/2321/xml |
| article xml uploaded. | 13 December 2017 11:00 CET | Original file | N/A |
| article pdf uploaded. | 13 December 2017 11:00 CET | Version of Record | https://www.mdpi.com/2071-1050/9/12/2321/pdf |
