| article html file updated | 6 February 2020 09:38 CET | Update | https://www.mdpi.com/2079-7737/3/2/368 |
| article html file updated | 21 March 2019 17:58 CET | Update | N/A |
| article html file updated | 20 August 2015 08:48 CEST | Update | N/A |
| article html file updated | 8 July 2014 09:52 CEST | Original file | N/A |
| article xml file uploaded | 8 July 2014 09:52 CEST | Original file | https://www.mdpi.com/2079-7737/3/2/368/xml |
| article pdf uploaded. | 30 May 2014 11:11 CEST | Version of Record | https://www.mdpi.com/2079-7737/3/2/368/pdf |
