| article html file updated | 7 February 2020 14:47 CET | Update | https://www.mdpi.com/2073-4344/6/9/136 |
| article html file updated | 5 May 2019 04:27 CEST | Update | N/A |
| article html file updated | 28 September 2016 23:00 CEST | Update | N/A |
| article html file updated | 10 September 2016 09:25 CEST | Original file | N/A |
| article xml uploaded. | 10 September 2016 09:24 CEST | Update | https://www.mdpi.com/2073-4344/6/9/136/xml |
| article xml uploaded. | 10 September 2016 09:24 CEST | Original file | N/A |
| article pdf uploaded. | 10 September 2016 09:24 CEST | Version of Record | https://www.mdpi.com/2073-4344/6/9/136/pdf |
