| article html file updated | 6 February 2020 15:44 CET | Update | https://www.mdpi.com/1999-4893/8/1/19 |
| article html file updated | 7 May 2019 01:24 CEST | Update | - |
| article html file updated | 25 March 2019 21:24 CET | Update | - |
| article html file updated | 21 August 2015 07:06 CEST | Update | - |
| article html file updated | 6 May 2015 05:17 CEST | Original file | - |
| article xml file uploaded | 6 May 2015 05:17 CEST | Original file | https://www.mdpi.com/1999-4893/8/1/19/xml |
| article pdf uploaded. | 4 February 2015 13:53 CET | Version of Record | https://www.mdpi.com/1999-4893/8/1/19/pdf |
