| article html file updated | 6 February 2020 00:26 CET | Update | https://www.mdpi.com/2075-1729/3/1/161 |
| article html file updated | 8 May 2019 08:44 CEST | Update | N/A |
| article html file updated | 20 March 2019 18:19 CET | Update | N/A |
| article html file updated | 17 June 2015 06:17 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/2075-1729/3/1/161/xml |
| article pdf uploaded. | 8 February 2013 14:05 CET | Updated version of record | https://www.mdpi.com/2075-1729/3/1/161/pdf |
| article pdf uploaded. | 6 February 2013 10:34 CET | Version of Record | https://www.mdpi.com/2075-1729/3/1/161/pdf-vor |
