| article html file updated | 6 February 2020 08:32 CET | Update | https://www.mdpi.com/2072-6643/6/4/1488 |
| article html file updated | 7 May 2019 16:02 CEST | Update | N/A |
| article html file updated | 21 March 2019 15:21 CET | Update | N/A |
| article html file updated | 20 August 2015 02:55 CEST | Update | N/A |
| article html file updated | 12 May 2014 15:30 CEST | Original file | N/A |
| article xml file uploaded | 12 May 2014 15:30 CEST | Original file | https://www.mdpi.com/2072-6643/6/4/1488/xml |
| article pdf uploaded. | 11 April 2014 09:00 CEST | Version of Record | https://www.mdpi.com/2072-6643/6/4/1488/pdf |
