| article html file updated | 6 February 2020 18:19 CET | Update | https://www.mdpi.com/2227-7390/3/2/319 |
| article html file updated | 20 September 2019 20:58 CEST | Update | - |
| article html file updated | 6 May 2019 20:40 CEST | Update | - |
| article html file updated | 26 March 2019 01:57 CET | Update | - |
| article html file updated | 21 August 2015 11:36 CEST | Update | - |
| article html file updated | 8 July 2015 10:59 CEST | Original file | - |
| article xml file uploaded | 8 July 2015 10:59 CEST | Original file | https://www.mdpi.com/2227-7390/3/2/319/xml |
| article pdf uploaded. | 8 May 2015 09:29 CEST | Updated version of record | https://www.mdpi.com/2227-7390/3/2/319/pdf |
| article pdf uploaded. | 7 May 2015 10:09 CEST | Updated version of record | https://www.mdpi.com/2227-7390/3/2/319/pdf-vor |
| article pdf uploaded. | 5 May 2015 11:37 CEST | Version of Record | https://www.mdpi.com/2227-7390/3/2/319/pdf-vor |
