| article html file updated | 6 February 2020 02:22 CET | Update | https://www.mdpi.com/2072-6643/5/6/1949 |
| article html file updated | 8 May 2019 04:36 CEST | Update | N/A |
| article html file updated | 20 March 2019 23:08 CET | Update | N/A |
| article html file updated | 17 June 2015 09:47 CEST | Update | N/A |
| article html file updated | 6 August 2013 15:58 CEST | Original file | N/A |
| article xml file uploaded | 6 August 2013 15:58 CEST | Original file | https://www.mdpi.com/2072-6643/5/6/1949/xml |
| article pdf uploaded. | 29 May 2013 11:14 CEST | Version of Record | https://www.mdpi.com/2072-6643/5/6/1949/pdf |
