| article html file updated | 6 February 2020 06:46 CET | Update | https://www.mdpi.com/2076-0817/3/1/73 |
| article html file updated | 7 May 2019 19:43 CEST | Update | N/A |
| article html file updated | 21 March 2019 11:07 CET | Update | N/A |
| article html file updated | 19 August 2015 17:38 CEST | Update | N/A |
| article html file updated | 26 August 2014 04:23 CEST | Original file | N/A |
| article xml file uploaded | 26 August 2014 04:23 CEST | Original file | https://www.mdpi.com/2076-0817/3/1/73/xml |
| article pdf uploaded. | 16 January 2014 13:50 CET | Version of Record | https://www.mdpi.com/2076-0817/3/1/73/pdf |
