| article html file updated | 6 February 2020 14:26 CET | Update | https://www.mdpi.com/1999-4907/5/12/3087 |
| article html file updated | 7 May 2019 04:02 CEST | Update | - |
| article html file updated | 25 March 2019 19:12 CET | Update | - |
| article html file updated | 21 August 2015 04:05 CEST | Update | - |
| article html file updated | 26 December 2014 11:27 CET | Original file | - |
| article xml file uploaded | 26 December 2014 11:27 CET | Original file | https://www.mdpi.com/1999-4907/5/12/3087/xml |
| article pdf uploaded. | 16 December 2014 09:09 CET | Updated version of record | https://www.mdpi.com/1999-4907/5/12/3087/pdf |
| article pdf uploaded. | 12 December 2014 12:06 CET | Version of Record | https://www.mdpi.com/1999-4907/5/12/3087/pdf-vor |
