| article html file updated | 7 February 2020 23:24 CET | Update | https://www.mdpi.com/2073-4441/9/2/122 |
| article html file updated | 23 September 2019 07:56 CEST | Update | - |
| article html file updated | 4 May 2019 11:15 CEST | Update | - |
| article html file updated | 1 March 2017 08:08 CET | Update | - |
| article html file updated | 16 February 2017 03:44 CET | Original file | - |
| article xml uploaded. | 16 February 2017 03:42 CET | Original file | https://www.mdpi.com/2073-4441/9/2/122/xml |
| article pdf uploaded. | 16 February 2017 03:42 CET | Updated version of record | https://www.mdpi.com/2073-4441/9/2/122/pdf |
| article pdf uploaded. | 14 February 2017 15:24 CET | Version of Record | https://www.mdpi.com/2073-4441/9/2/122/pdf-vor |
