| article html file updated | 6 February 2020 00:16 CET | Update | https://www.mdpi.com/1999-4907/4/1/104 |
| article html file updated | 19 September 2019 17:28 CEST | Update | - |
| article html file updated | 8 May 2019 09:11 CEST | Update | - |
| article html file updated | 20 March 2019 17:53 CET | Update | - |
| article html file updated | 17 June 2015 05:55 CEST | Update | - |
| article html file updated | 14 August 2014 11:41 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:41 CEST | Update | https://www.mdpi.com/1999-4907/4/1/104/xml |
| article html file updated | 14 August 2014 11:21 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:21 CEST | Original file | - |
| article html file updated | 8 February 2013 09:42 CET | Original file | - |
| article pdf uploaded. | 4 February 2013 12:10 CET | Updated version of record | https://www.mdpi.com/1999-4907/4/1/104/pdf |
| article pdf uploaded. | 28 January 2013 13:52 CET | Version of Record | - |
