| article html file updated | 7 February 2020 14:55 CET | Update | https://www.mdpi.com/2220-9964/5/9/161 |
| article html file updated | 5 May 2019 04:13 CEST | Update | N/A |
| article html file updated | 27 September 2016 09:41 CEST | Update | N/A |
| article html file updated | 13 September 2016 22:42 CEST | Original file | N/A |
| article xml uploaded. | 13 September 2016 14:08 CEST | Update | https://www.mdpi.com/2220-9964/5/9/161/xml |
| article xml uploaded. | 13 September 2016 14:08 CEST | Original file | N/A |
| article pdf uploaded. | 13 September 2016 14:08 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/9/161/pdf |
