| article html file updated | 7 February 2020 06:46 CET | Update | https://www.mdpi.com/2073-4441/8/4/131 |
| article html file updated | 5 May 2019 19:41 CEST | Update | - |
| article html file updated | 27 March 2019 00:56 CET | Update | - |
| article html file updated | 28 April 2016 12:19 CEST | Update | - |
| article html file updated | 1 April 2016 14:59 CEST | Original file | - |
| article xml uploaded. | 1 April 2016 14:58 CEST | Update | https://www.mdpi.com/2073-4441/8/4/131/xml |
| article pdf uploaded. | 1 April 2016 14:58 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/4/131/pdf |
