| article html file updated | 6 February 2020 18:33 CET | Update | https://www.mdpi.com/2227-7390/3/2/337 |
| article html file updated | 6 May 2019 20:13 CEST | Update | - |
| article html file updated | 26 March 2019 02:25 CET | Update | - |
| article html file updated | 21 August 2015 12:00 CEST | Update | - |
| article html file updated | 24 July 2015 08:40 CEST | Original file | - |
| article xml file uploaded | 24 July 2015 08:40 CEST | Original file | https://www.mdpi.com/2227-7390/3/2/337/xml |
| article pdf uploaded. | 12 May 2015 15:05 CEST | Version of Record | https://www.mdpi.com/2227-7390/3/2/337/pdf |
