| article html file updated | 6 February 2020 16:44 CET | Update | https://www.mdpi.com/1999-4907/6/3/748 |
| article html file updated | 6 May 2019 23:34 CEST | Update | - |
| article html file updated | 25 March 2019 23:08 CET | Update | - |
| article html file updated | 21 August 2015 08:58 CEST | Update | - |
| article html file updated | 23 March 2015 07:42 CET | Original file | - |
| article xml file uploaded | 23 March 2015 07:42 CET | Original file | https://www.mdpi.com/1999-4907/6/3/748/xml |
| article pdf uploaded. | 19 March 2015 08:40 CET | Updated version of record | https://www.mdpi.com/1999-4907/6/3/748/pdf |
| article pdf uploaded. | 18 March 2015 14:08 CET | Version of Record | https://www.mdpi.com/1999-4907/6/3/748/pdf-vor |
