| article html file updated | 7 February 2020 02:40 CET | Update | https://www.mdpi.com/2072-6643/8/1/3 |
| article html file updated | 6 May 2019 04:04 CEST | Update | - |
| article html file updated | 26 March 2019 17:11 CET | Original file | - |
| article pdf uploaded. | 12 January 2016 15:08 CET | Updated version of record | https://www.mdpi.com/2072-6643/8/1/3/pdf |
| article pdf uploaded. | 24 December 2015 14:41 CET | Version of Record | https://www.mdpi.com/2072-6643/8/1/3/pdf-vor |
| article xml uploaded. | 24 December 2015 14:41 CET | Original file | https://www.mdpi.com/2072-6643/8/1/3/xml |
