| article html file updated | 6 February 2020 02:59 CET | Update | https://www.mdpi.com/2079-6374/3/3/259 |
| article html file updated | 8 May 2019 03:17 CEST | Update | N/A |
| article html file updated | 21 March 2019 00:43 CET | Update | N/A |
| article html file updated | 17 June 2015 10:53 CEST | Update | N/A |
| article html file updated | 26 August 2014 04:00 CEST | Original file | N/A |
| article xml file uploaded | 26 August 2014 04:00 CEST | Original file | https://www.mdpi.com/2079-6374/3/3/259/xml |
| article pdf uploaded. | 4 July 2013 12:32 CEST | Version of Record | https://www.mdpi.com/2079-6374/3/3/259/pdf |
