| article html file updated | 7 February 2020 02:03 CET | Update | https://www.mdpi.com/2077-0383/4/12/1955 |
| article html file updated | 21 September 2019 07:37 CEST | Update | - |
| article html file updated | 6 May 2019 05:20 CEST | Update | - |
| article html file updated | 26 March 2019 16:11 CET | Original file | - |
| article pdf uploaded. | 10 December 2015 13:22 CET | Version of Record | https://www.mdpi.com/2077-0383/4/12/1955/pdf |
| article xml uploaded. | 10 December 2015 13:22 CET | Original file | https://www.mdpi.com/2077-0383/4/12/1955/xml |
