| article html file updated | 6 February 2020 15:16 CET | Update | https://www.mdpi.com/1999-4915/7/1/199 |
| article html file updated | 7 May 2019 02:18 CEST | Update | - |
| article html file updated | 25 March 2019 20:39 CET | Update | - |
| article html file updated | 21 August 2015 06:04 CEST | Update | - |
| article html file updated | 27 January 2015 07:39 CET | Original file | - |
| article xml file uploaded | 27 January 2015 07:39 CET | Original file | https://www.mdpi.com/1999-4915/7/1/199/xml |
| article pdf uploaded. | 19 January 2015 10:55 CET | Version of Record | https://www.mdpi.com/1999-4915/7/1/199/pdf |
