| article html file updated | 6 February 2020 23:29 CET | Update | https://www.mdpi.com/2073-4344/5/4/1657 |
| article html file updated | 6 May 2019 09:56 CEST | Update | - |
| article html file updated | 26 March 2019 12:01 CET | Update | - |
| article html file updated | 4 November 2015 06:01 CET | Original file | - |
| article xml file uploaded | 4 November 2015 06:01 CET | Original file | https://www.mdpi.com/2073-4344/5/4/1657/xml |
| article pdf uploaded. | 5 October 2015 10:32 CEST | Version of Record | https://www.mdpi.com/2073-4344/5/4/1657/pdf |
