| article html file updated | 6 February 2020 15:15 CET | Update | https://www.mdpi.com/1999-4915/7/1/180 |
| article html file updated | 7 May 2019 02:19 CEST | Update | N/A |
| article html file updated | 25 March 2019 20:38 CET | Update | N/A |
| article html file updated | 21 August 2015 06:01 CEST | Update | N/A |
| article html file updated | 27 January 2015 07:39 CET | Original file | N/A |
| article xml file uploaded | 27 January 2015 07:39 CET | Original file | https://www.mdpi.com/1999-4915/7/1/180/xml |
| article pdf uploaded. | 16 January 2015 15:24 CET | Version of Record | https://www.mdpi.com/1999-4915/7/1/180/pdf |
