| article html file updated | 7 February 2020 06:38 CET | Update | https://www.mdpi.com/2073-4441/8/4/122 |
| article html file updated | 5 May 2019 19:58 CEST | Update | - |
| article html file updated | 27 March 2019 00:42 CET | Update | - |
| article html file updated | 28 April 2016 12:17 CEST | Update | - |
| article html file updated | 30 March 2016 11:54 CEST | Original file | - |
| article xml uploaded. | 30 March 2016 11:53 CEST | Update | https://www.mdpi.com/2073-4441/8/4/122/xml |
| article pdf uploaded. | 30 March 2016 11:53 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/4/122/pdf |
