| article html file updated | 6 February 2020 17:19 CET | Update | https://www.mdpi.com/2073-4360/7/4/644 |
| article html file updated | 6 May 2019 22:34 CEST | Update | N/A |
| article html file updated | 26 March 2019 00:05 CET | Update | N/A |
| article html file updated | 21 August 2015 09:58 CEST | Update | N/A |
| article html file updated | 30 April 2015 11:43 CEST | Original file | N/A |
| article xml file uploaded | 30 April 2015 11:43 CEST | Original file | https://www.mdpi.com/2073-4360/7/4/644/xml |
| article pdf uploaded. | 3 April 2015 11:53 CEST | Version of Record | https://www.mdpi.com/2073-4360/7/4/644/pdf |
