| article html file updated | 7 February 2020 06:56 CET | Update | https://www.mdpi.com/2071-1050/8/4/342 |
| article html file updated | 5 May 2019 19:22 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:14 CET | Update | N/A |
| article html file updated | 29 April 2016 05:51 CEST | Update | N/A |
| article html file updated | 7 April 2016 11:09 CEST | Original file | N/A |
| article xml uploaded. | 7 April 2016 11:07 CEST | Original file | https://www.mdpi.com/2071-1050/8/4/342/xml |
| article pdf uploaded. | 7 April 2016 11:07 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/4/342/pdf |
