| article html file updated | 7 February 2020 03:21 CET | Update | https://www.mdpi.com/2072-6694/8/1/15 |
| article html file updated | 6 May 2019 02:43 CEST | Update | - |
| article html file updated | 26 March 2019 18:18 CET | Original file | - |
| article pdf uploaded. | 13 January 2016 08:52 CET | Version of Record | https://www.mdpi.com/2072-6694/8/1/15/pdf |
| article xml uploaded. | 13 January 2016 08:52 CET | Original file | https://www.mdpi.com/2072-6694/8/1/15/xml |
