| article html file updated | 7 February 2020 18:10 CET | Update | https://www.mdpi.com/2306-5710/2/4/30 |
| article html file updated | 4 May 2019 22:14 CEST | Update | - |
| article html file updated | 18 November 2016 06:35 CET | Update | - |
| article xml uploaded. | 18 November 2016 06:34 CET | Update | https://www.mdpi.com/2306-5710/2/4/30/xml |
| article pdf uploaded. | 18 November 2016 06:34 CET | Updated version of record | https://www.mdpi.com/2306-5710/2/4/30/pdf |
| article html file updated | 17 November 2016 11:37 CET | Original file | - |
| article xml uploaded. | 17 November 2016 11:36 CET | Original file | - |
| article pdf uploaded. | 17 November 2016 11:36 CET | Version of Record | https://www.mdpi.com/2306-5710/2/4/30/pdf-vor |
