| article html file updated | 6 February 2020 05:42 CET | Update | https://www.mdpi.com/2076-328X/3/4/647 |
| article html file updated | 7 May 2019 21:49 CEST | Update | N/A |
| article html file updated | 21 March 2019 08:03 CET | Update | N/A |
| article html file updated | 19 August 2015 10:29 CEST | Update | N/A |
| article html file updated | 26 August 2014 03:57 CEST | Original file | N/A |
| article xml file uploaded | 26 August 2014 03:57 CEST | Original file | https://www.mdpi.com/2076-328X/3/4/647/xml |
| article pdf uploaded. | 21 November 2013 14:51 CET | Version of Record | https://www.mdpi.com/2076-328X/3/4/647/pdf |
