| article html file updated | 6 February 2020 06:19 CET | Update | https://www.mdpi.com/2072-6643/6/1/37 |
| article html file updated | 7 May 2019 20:38 CEST | Update | - |
| article html file updated | 21 March 2019 09:46 CET | Update | - |
| article html file updated | 19 August 2015 14:18 CEST | Update | - |
| article html file updated | 17 February 2014 12:26 CET | Update | - |
| article xml file uploaded | 17 February 2014 12:26 CET | Update | https://www.mdpi.com/2072-6643/6/1/37/xml |
| article html file updated | 23 December 2013 17:16 CET | Original file | - |
| article xml uploaded. | 23 December 2013 17:16 CET | Original file | - |
| article pdf uploaded. | 23 December 2013 17:16 CET | Updated version of record | https://www.mdpi.com/2072-6643/6/1/37/pdf |
| article pdf uploaded. | 19 December 2013 11:54 CET | Version of Record | https://www.mdpi.com/2072-6643/6/1/37/pdf-vor |
