| article html file updated | 8 February 2020 02:29 CET | Update | https://www.mdpi.com/2075-5309/7/2/30 |
| article html file updated | 24 September 2019 01:35 CEST | Update | - |
| article html file updated | 4 May 2019 04:30 CEST | Update | - |
| article html file updated | 28 June 2017 12:45 CEST | Update | - |
| article html file updated | 30 March 2017 12:58 CEST | Original file | - |
| article xml uploaded. | 30 March 2017 12:57 CEST | Update | https://www.mdpi.com/2075-5309/7/2/30/xml |
| article pdf uploaded. | 30 March 2017 12:57 CEST | Updated version of record | https://www.mdpi.com/2075-5309/7/2/30/pdf |
| article pdf uploaded. | 29 March 2017 16:01 CEST | Version of Record | https://www.mdpi.com/2075-5309/7/2/30/pdf-vor |
