| article html file updated | 6 February 2020 23:54 CET | Update | https://www.mdpi.com/2227-7390/3/4/945 |
| article html file updated | 21 September 2019 04:57 CEST | Update | - |
| article html file updated | 6 May 2019 09:04 CEST | Update | - |
| article html file updated | 26 March 2019 12:48 CET | Update | - |
| article html file updated | 27 October 2015 09:22 CET | Original file | - |
| article xml file uploaded | 27 October 2015 09:22 CET | Original file | https://www.mdpi.com/2227-7390/3/4/945/xml |
| article pdf uploaded. | 16 October 2015 16:56 CEST | Version of Record | https://www.mdpi.com/2227-7390/3/4/945/pdf |
