| article html file updated | 6 February 2020 06:48 CET | Update | https://www.mdpi.com/2072-6643/6/1/371 |
| article html file updated | 7 May 2019 19:40 CEST | Update | - |
| article html file updated | 21 March 2019 11:11 CET | Update | - |
| article html file updated | 19 August 2015 17:49 CEST | Update | - |
| article html file updated | 17 February 2014 12:33 CET | Original file | - |
| article xml file uploaded | 17 February 2014 12:33 CET | Original file | https://www.mdpi.com/2072-6643/6/1/371/xml |
| article pdf uploaded. | 17 January 2014 16:12 CET | Version of Record | https://www.mdpi.com/2072-6643/6/1/371/pdf |
