| article html file updated | 7 February 2020 09:27 CET | Update | https://www.mdpi.com/2071-1050/8/6/521 |
| article html file updated | 5 May 2019 14:20 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:04 CET | Update | N/A |
| article html file updated | 29 June 2016 05:24 CEST | Update | N/A |
| article html file updated | 30 May 2016 10:35 CEST | Update | N/A |
| article html file updated | 29 May 2016 23:11 CEST | Update | N/A |
| article html file updated | 28 May 2016 23:24 CEST | Update | N/A |
| article html file updated | 28 May 2016 11:21 CEST | Original file | N/A |
| article xml uploaded. | 28 May 2016 11:20 CEST | Original file | https://www.mdpi.com/2071-1050/8/6/521/xml |
| article pdf uploaded. | 28 May 2016 11:20 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/521/pdf |
