| article html file updated | 6 February 2020 07:04 CET | Update | https://www.mdpi.com/2227-9717/2/1/141 |
| article html file updated | 7 May 2019 19:02 CEST | Update | - |
| article html file updated | 21 March 2019 11:52 CET | Update | - |
| article html file updated | 19 August 2015 19:26 CEST | Update | - |
| article html file updated | 24 June 2014 12:23 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:23 CEST | Original file | https://www.mdpi.com/2227-9717/2/1/141/xml |
| article pdf uploaded. | 29 January 2014 12:08 CET | Version of Record | https://www.mdpi.com/2227-9717/2/1/141/pdf |
