| article html file updated | 6 February 2020 19:58 CET | Update | https://www.mdpi.com/2076-0817/4/2/406 |
| article html file updated | 6 May 2019 17:11 CEST | Update | N/A |
| article html file updated | 26 March 2019 05:16 CET | Update | N/A |
| article html file updated | 8 September 2015 06:05 CEST | Update | N/A |
| article xml file uploaded | 8 September 2015 06:05 CEST | Update | https://www.mdpi.com/2076-0817/4/2/406/xml |
| article html file updated | 21 August 2015 14:01 CEST | Update | N/A |
| article html file updated | 7 July 2015 10:59 CEST | Original file | N/A |
| article xml file uploaded | 7 July 2015 10:59 CEST | Original file | N/A |
| article pdf uploaded. | 23 June 2015 14:40 CEST | Version of Record | https://www.mdpi.com/2076-0817/4/2/406/pdf |
