| article html file updated | 6 February 2020 22:19 CET | Update | https://www.mdpi.com/2079-7737/4/3/540 |
| article html file updated | 6 May 2019 12:20 CEST | Update | - |
| article html file updated | 26 March 2019 09:50 CET | Update | - |
| article html file updated | 30 September 2015 08:31 CEST | Original file | - |
| article xml file uploaded | 30 September 2015 08:31 CEST | Original file | https://www.mdpi.com/2079-7737/4/3/540/xml |
| article pdf uploaded. | 31 August 2015 16:11 CEST | Version of Record | https://www.mdpi.com/2079-7737/4/3/540/pdf |
