| article html file updated | 7 February 2020 01:29 CET | Update | https://www.mdpi.com/2076-2615/5/4/407 |
| article html file updated | 6 May 2019 06:29 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:15 CET | Original file | N/A |
| article pdf uploaded. | 30 November 2015 09:25 CET | Version of Record | https://www.mdpi.com/2076-2615/5/4/407/pdf |
| article xml uploaded. | 30 November 2015 09:25 CET | Original file | https://www.mdpi.com/2076-2615/5/4/407/xml |
