| article html file updated | 7 February 2020 22:53 CET | Update | https://www.mdpi.com/2073-4352/7/2/42 |
| article html file updated | 4 May 2019 12:17 CEST | Update | - |
| article html file updated | 2 March 2017 03:43 CET | Update | - |
| article html file updated | 9 February 2017 10:34 CET | Original file | - |
| article xml uploaded. | 9 February 2017 10:33 CET | Original file | https://www.mdpi.com/2073-4352/7/2/42/xml |
| article pdf uploaded. | 9 February 2017 10:33 CET | Updated version of record | https://www.mdpi.com/2073-4352/7/2/42/pdf |
| article pdf uploaded. | 8 February 2017 14:40 CET | Version of Record | https://www.mdpi.com/2073-4352/7/2/42/pdf-vor |
