| article html file updated | 6 February 2020 04:42 CET | Update | https://www.mdpi.com/2075-4418/3/4/344 |
| article html file updated | 7 May 2019 23:44 CEST | Update | N/A |
| article html file updated | 21 March 2019 05:25 CET | Update | N/A |
| article html file updated | 17 June 2015 13:38 CEST | Update | N/A |
| article html file updated | 24 June 2014 12:05 CEST | Original file | N/A |
| article xml file uploaded | 24 June 2014 12:05 CEST | Original file | https://www.mdpi.com/2075-4418/3/4/344/xml |
| article pdf uploaded. | 2 October 2013 13:45 CEST | Version of Record | https://www.mdpi.com/2075-4418/3/4/344/pdf |
