| article html file updated | 7 February 2020 05:13 CET | Update | https://www.mdpi.com/2071-1050/8/3/218 |
| article html file updated | 5 May 2019 22:54 CEST | Update | - |
| article html file updated | 26 March 2019 22:05 CET | Update | - |
| article html file updated | 31 March 2016 08:37 CEST | Original file | - |
| article pdf uploaded. | 29 February 2016 11:17 CET | Version of Record | https://www.mdpi.com/2071-1050/8/3/218/pdf |
| article xml uploaded. | 29 February 2016 11:17 CET | Original file | https://www.mdpi.com/2071-1050/8/3/218/xml |
