| article html file updated | 6 February 2020 00:44 CET | Update | https://www.mdpi.com/2075-1729/3/1/244 |
| article html file updated | 8 May 2019 07:57 CEST | Update | N/A |
| article html file updated | 20 March 2019 19:07 CET | Update | N/A |
| article html file updated | 17 June 2015 06:55 CEST | Update | N/A |
| article html file updated | 24 July 2014 10:32 CEST | Original file | N/A |
| article xml file uploaded | 24 July 2014 10:32 CEST | Original file | https://www.mdpi.com/2075-1729/3/1/244/xml |
| article pdf uploaded. | 28 February 2013 14:38 CET | Version of Record | https://www.mdpi.com/2075-1729/3/1/244/pdf |
