| article html file updated | 6 February 2020 00:23 CET | Update | https://www.mdpi.com/2076-0817/2/1/13 |
| article html file updated | 8 May 2019 08:51 CEST | Update | N/A |
| article html file updated | 20 March 2019 18:11 CET | Update | N/A |
| article html file updated | 17 June 2015 06:09 CEST | Update | N/A |
| article html file updated | 26 August 2014 04:22 CEST | Update | N/A |
| article xml file uploaded | 26 August 2014 04:22 CEST | Update | https://www.mdpi.com/2076-0817/2/1/13/xml |
| article html file updated | 19 February 2013 14:14 CET | Update | N/A |
| article xml uploaded. | 19 February 2013 14:14 CET | Original file | N/A |
| article html file updated | 8 February 2013 09:51 CET | Original file | N/A |
| article pdf uploaded. | 4 February 2013 16:04 CET | Version of Record | https://www.mdpi.com/2076-0817/2/1/13/pdf |
