| article html file updated | 6 February 2020 12:12 CET | Update | https://www.mdpi.com/1999-4907/5/9/2122 |
| article html file updated | 7 May 2019 08:22 CEST | Update | N/A |
| article html file updated | 22 March 2019 00:49 CET | Update | N/A |
| article html file updated | 20 August 2015 18:57 CEST | Update | N/A |
| article html file updated | 23 September 2014 12:02 CEST | Original file | N/A |
| article xml file uploaded | 23 September 2014 12:02 CEST | Original file | https://www.mdpi.com/1999-4907/5/9/2122/xml |
| article pdf uploaded. | 16 September 2014 08:24 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/9/2122/pdf |
| article pdf uploaded. | 15 September 2014 08:53 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/9/2122/pdf-vor |
