| article html file updated | 6 February 2020 01:33 CET | Update | https://www.mdpi.com/2073-4344/3/2/418 |
| article html file updated | 8 May 2019 06:11 CEST | Update | N/A |
| article html file updated | 20 March 2019 21:07 CET | Update | N/A |
| article html file updated | 28 October 2015 11:04 CET | Update | N/A |
| article xml file uploaded | 28 October 2015 11:04 CET | Update | https://www.mdpi.com/2073-4344/3/2/418/xml |
| article html file updated | 17 June 2015 08:30 CEST | Update | N/A |
| article html file updated | 14 August 2014 11:41 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 11:41 CEST | Update | N/A |
| article html file updated | 14 August 2014 11:21 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 11:21 CEST | Update | N/A |
| article html file updated | 20 May 2014 10:07 CEST | Original file | N/A |
| article xml file uploaded | 20 May 2014 10:07 CEST | Original file | N/A |
| article pdf uploaded. | 16 April 2013 15:16 CEST | Version of Record | https://www.mdpi.com/2073-4344/3/2/418/pdf |
