| article html file updated | 7 February 2020 07:16 CET | Update | https://www.mdpi.com/1999-4915/8/4/99 |
| article html file updated | 5 May 2019 18:37 CEST | Update | - |
| article html file updated | 27 March 2019 01:54 CET | Update | - |
| article html file updated | 28 April 2016 12:09 CEST | Update | - |
| article html file updated | 14 April 2016 14:31 CEST | Original file | - |
| article xml uploaded. | 14 April 2016 14:30 CEST | Original file | https://www.mdpi.com/1999-4915/8/4/99/xml |
| article pdf uploaded. | 14 April 2016 14:30 CEST | Version of Record | https://www.mdpi.com/1999-4915/8/4/99/pdf |
