| article html file updated | 7 February 2020 07:48 CET | Update | https://www.mdpi.com/2076-0787/5/2/25 |
| article html file updated | 5 May 2019 17:34 CEST | Update | - |
| article html file updated | 27 March 2019 02:58 CET | Original file | - |
| article xml uploaded. | 26 April 2016 09:44 CEST | Original file | https://www.mdpi.com/2076-0787/5/2/25/xml |
| article pdf uploaded. | 26 April 2016 09:44 CEST | Version of Record | https://www.mdpi.com/2076-0787/5/2/25/pdf |
