| article html file updated | 6 February 2020 08:01 CET | Update | https://www.mdpi.com/1999-4907/5/3/425 |
| article html file updated | 7 May 2019 17:06 CEST | Update | - |
| article html file updated | 21 March 2019 14:08 CET | Update | - |
| article html file updated | 20 August 2015 00:23 CEST | Update | - |
| article html file updated | 24 June 2014 12:08 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:08 CEST | Original file | https://www.mdpi.com/1999-4907/5/3/425/xml |
| article pdf uploaded. | 25 March 2014 09:47 CET | Updated version of record | https://www.mdpi.com/1999-4907/5/3/425/pdf |
| article pdf uploaded. | 19 March 2014 15:28 CET | Version of Record | https://www.mdpi.com/1999-4907/5/3/425/pdf-vor |
