| article html file updated | 7 February 2020 01:29 CET | Update | https://www.mdpi.com/2304-6740/3/4/534 |
| article html file updated | 6 May 2019 06:30 CEST | Update | - |
| article html file updated | 26 March 2019 15:15 CET | Original file | - |
| article pdf uploaded. | 27 November 2015 14:46 CET | Version of Record | https://www.mdpi.com/2304-6740/3/4/534/pdf |
| article xml uploaded. | 27 November 2015 14:46 CET | Original file | https://www.mdpi.com/2304-6740/3/4/534/xml |
