| article html file updated | 7 February 2020 01:37 CET | Update | https://www.mdpi.com/2073-4360/7/12/1530 |
| article html file updated | 6 May 2019 06:14 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:28 CET | Original file | N/A |
| article pdf uploaded. | 2 December 2015 13:41 CET | Version of Record | https://www.mdpi.com/2073-4360/7/12/1530/pdf |
| article xml uploaded. | 2 December 2015 13:41 CET | Original file | https://www.mdpi.com/2073-4360/7/12/1530/xml |
