| article html file updated | 8 February 2020 01:44 CET | Update | https://www.mdpi.com/2071-1050/9/3/451 |
| article html file updated | 23 September 2019 21:19 CEST | Update | - |
| article html file updated | 4 May 2019 06:07 CEST | Update | - |
| article html file updated | 28 March 2017 06:15 CEST | Update | - |
| article html file updated | 19 March 2017 05:30 CET | Original file | - |
| article xml uploaded. | 19 March 2017 05:29 CET | Original file | https://www.mdpi.com/2071-1050/9/3/451/xml |
| article pdf uploaded. | 19 March 2017 05:29 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/3/451/pdf |
| article pdf uploaded. | 18 March 2017 08:58 CET | Version of Record | https://www.mdpi.com/2071-1050/9/3/451/pdf-vor |
