| article html file updated | 6 February 2020 03:23 CET | Update | https://www.mdpi.com/2076-328X/3/3/418 |
| article html file updated | 8 May 2019 02:33 CEST | Update | N/A |
| article html file updated | 21 March 2019 01:46 CET | Update | N/A |
| article html file updated | 17 June 2015 11:36 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/3/3/418/xml |
| article pdf uploaded. | 23 July 2013 13:19 CEST | Version of Record | https://www.mdpi.com/2076-328X/3/3/418/pdf |
