| article html file updated | 6 February 2020 00:58 CET | Update | https://www.mdpi.com/1999-4923/5/1/168 |
| article html file updated | 19 September 2019 18:48 CEST | Update | N/A |
| article html file updated | 8 May 2019 07:25 CEST | Update | N/A |
| article html file updated | 20 March 2019 19:43 CET | Update | N/A |
| article html file updated | 17 June 2015 07:26 CEST | Update | N/A |
| article html file updated | 28 April 2014 11:06 CEST | Original file | N/A |
| article xml file uploaded | 28 April 2014 11:05 CEST | Original file | https://www.mdpi.com/1999-4923/5/1/168/xml |
| article pdf uploaded. | 12 March 2013 15:41 CET | Version of Record | https://www.mdpi.com/1999-4923/5/1/168/pdf |
