| article html file updated | 7 February 2020 03:27 CET | Update | https://www.mdpi.com/2072-4292/8/1/68 |
| article html file updated | 6 May 2019 02:32 CEST | Update | - |
| article html file updated | 26 March 2019 18:30 CET | Original file | - |
| article pdf uploaded. | 15 January 2016 09:53 CET | Version of Record | https://www.mdpi.com/2072-4292/8/1/68/pdf |
| article xml uploaded. | 15 January 2016 09:53 CET | Original file | https://www.mdpi.com/2072-4292/8/1/68/xml |
