| article html file updated | 13 August 2026 07:17 CEST | Update | https://www.mdpi.com/2227-9717/2/4/867 |
| article html file updated | 6 February 2020 13:55 CET | Update | N/A |
| article html file updated | 7 May 2019 04:59 CEST | Update | N/A |
| article html file updated | 25 March 2019 18:16 CET | Original file | N/A |
| article pdf uploaded. | 25 November 2014 16:15 CET | Version of Record | https://www.mdpi.com/2227-9717/2/4/867/pdf |
