| article html file updated | 7 February 2020 14:28 CET | Update | https://www.mdpi.com/2075-4701/6/9/214 |
| article html file updated | 5 May 2019 05:02 CEST | Update | N/A |
| article html file updated | 27 September 2016 10:07 CEST | Update | N/A |
| article html file updated | 6 September 2016 06:39 CEST | Original file | N/A |
| article xml uploaded. | 6 September 2016 06:37 CEST | Update | https://www.mdpi.com/2075-4701/6/9/214/xml |
| article xml uploaded. | 6 September 2016 06:37 CEST | Original file | N/A |
| article pdf uploaded. | 6 September 2016 06:37 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/214/pdf |
