| article html file updated | 6 February 2020 19:12 CET | Update | https://www.mdpi.com/2073-4344/5/2/926 |
| article html file updated | 6 May 2019 18:45 CEST | Update | - |
| article html file updated | 26 March 2019 03:50 CET | Update | - |
| article html file updated | 21 August 2015 12:53 CEST | Update | - |
| article html file updated | 2 July 2015 06:37 CEST | Original file | - |
| article xml file uploaded | 2 July 2015 06:37 CEST | Original file | https://www.mdpi.com/2073-4344/5/2/926/xml |
| article pdf uploaded. | 29 May 2015 14:41 CEST | Updated version of record | https://www.mdpi.com/2073-4344/5/2/926/pdf |
