| article html file updated | 7 February 2020 19:37 CET | Update | https://www.mdpi.com/2071-1050/8/12/1321 |
| article html file updated | 22 September 2019 11:31 CEST | Update | N/A |
| article html file updated | 4 May 2019 19:13 CEST | Update | N/A |
| article html file updated | 28 December 2016 08:20 CET | Update | N/A |
| article html file updated | 14 December 2016 11:14 CET | Original file | N/A |
| article xml uploaded. | 14 December 2016 11:12 CET | Update | https://www.mdpi.com/2071-1050/8/12/1321/xml |
| article xml uploaded. | 14 December 2016 11:12 CET | Original file | N/A |
| article pdf uploaded. | 14 December 2016 11:12 CET | Version of Record | https://www.mdpi.com/2071-1050/8/12/1321/pdf |
