| article html file updated | 7 February 2020 02:11 CET | Update | https://www.mdpi.com/2075-4701/5/4/2372 |
| article html file updated | 6 May 2019 05:04 CEST | Update | - |
| article html file updated | 26 March 2019 16:23 CET | Original file | - |
| article pdf uploaded. | 14 December 2015 11:19 CET | Version of Record | https://www.mdpi.com/2075-4701/5/4/2372/pdf |
| article xml uploaded. | 14 December 2015 11:19 CET | Original file | https://www.mdpi.com/2075-4701/5/4/2372/xml |
