| article html file updated | 7 February 2020 03:43 CET | Update | https://www.mdpi.com/2072-4292/8/1/81 |
| article html file updated | 6 May 2019 02:02 CEST | Update | - |
| article html file updated | 26 March 2019 19:01 CET | Original file | - |
| article pdf uploaded. | 21 January 2016 11:00 CET | Version of Record | https://www.mdpi.com/2072-4292/8/1/81/pdf |
| article xml uploaded. | 21 January 2016 11:00 CET | Original file | https://www.mdpi.com/2072-4292/8/1/81/xml |
