| article html file updated | 6 February 2020 17:23 CET | Update | https://www.mdpi.com/1999-4915/7/4/1823 |
| article html file updated | 6 May 2019 22:28 CEST | Update | N/A |
| article html file updated | 26 March 2019 00:11 CET | Update | N/A |
| article html file updated | 21 August 2015 10:02 CEST | Update | N/A |
| article html file updated | 29 April 2015 04:01 CEST | Original file | N/A |
| article xml file uploaded | 29 April 2015 04:01 CEST | Original file | https://www.mdpi.com/1999-4915/7/4/1823/xml |
| article pdf uploaded. | 8 April 2015 09:34 CEST | Version of Record | https://www.mdpi.com/1999-4915/7/4/1823/pdf |
