| article html file updated | 8 February 2020 02:14 CET | Update | https://www.mdpi.com/2071-1050/9/4/492 |
| article html file updated | 4 May 2019 05:04 CEST | Update | - |
| article html file updated | 28 April 2017 10:43 CEST | Update | - |
| article html file updated | 27 March 2017 05:48 CEST | Update | - |
| article html file updated | 27 March 2017 05:32 CEST | Update | - |
| article html file updated | 25 March 2017 22:32 CET | Update | - |
| article html file updated | 25 March 2017 06:56 CET | Original file | - |
| article xml uploaded. | 25 March 2017 06:55 CET | Original file | https://www.mdpi.com/2071-1050/9/4/492/xml |
| article pdf uploaded. | 25 March 2017 06:55 CET | Version of Record | https://www.mdpi.com/2071-1050/9/4/492/pdf |
