| article html file updated | 7 February 2020 02:18 CET | Update | https://www.mdpi.com/2306-7381/2/4/440 |
| article html file updated | 6 May 2019 04:50 CEST | Update | - |
| article html file updated | 26 March 2019 16:36 CET | Original file | - |
| article pdf uploaded. | 16 December 2015 15:03 CET | Version of Record | https://www.mdpi.com/2306-7381/2/4/440/pdf |
| article xml uploaded. | 16 December 2015 15:03 CET | Original file | https://www.mdpi.com/2306-7381/2/4/440/xml |
