| article html file updated | 6 February 2020 04:55 CET | Update | https://www.mdpi.com/1999-4915/5/10/2546 |
| article html file updated | 7 May 2019 23:15 CEST | Update | N/A |
| article html file updated | 21 March 2019 06:02 CET | Update | N/A |
| article html file updated | 17 June 2015 13:56 CEST | Update | N/A |
| article html file updated | 1 November 2013 13:57 CET | Original file | N/A |
| article xml file uploaded | 1 November 2013 13:57 CET | Original file | https://www.mdpi.com/1999-4915/5/10/2546/xml |
| article pdf uploaded. | 16 October 2013 14:21 CEST | Version of Record | https://www.mdpi.com/1999-4915/5/10/2546/pdf |
