| article html file updated | 6 February 2020 10:20 CET | Update | https://www.mdpi.com/2075-4701/4/3/314 |
| article html file updated | 7 May 2019 12:22 CEST | Update | - |
| article html file updated | 21 March 2019 19:51 CET | Update | - |
| article html file updated | 20 August 2015 11:17 CEST | Update | - |
| article html file updated | 26 September 2014 09:54 CEST | Original file | - |
| article xml file uploaded | 26 September 2014 09:54 CEST | Original file | https://www.mdpi.com/2075-4701/4/3/314/xml |
| article pdf uploaded. | 1 July 2014 14:31 CEST | Updated version of record | https://www.mdpi.com/2075-4701/4/3/314/pdf |
| article pdf uploaded. | 30 June 2014 09:40 CEST | Version of Record | https://www.mdpi.com/2075-4701/4/3/314/pdf-vor |
