| article html file updated | 7 February 2020 13:56 CET | Update | https://www.mdpi.com/2073-4344/6/9/129 |
| article html file updated | 5 May 2019 06:00 CEST | Update | - |
| article html file updated | 27 March 2019 14:53 CET | Update | - |
| article html file updated | 28 September 2016 22:55 CEST | Update | - |
| article html file updated | 26 August 2016 11:04 CEST | Original file | - |
| article xml uploaded. | 26 August 2016 10:33 CEST | Original file | https://www.mdpi.com/2073-4344/6/9/129/xml |
| article pdf uploaded. | 26 August 2016 10:33 CEST | Version of Record | https://www.mdpi.com/2073-4344/6/9/129/pdf |
