| article html file updated | 8 February 2020 02:28 CET | Update | https://www.mdpi.com/2075-163X/7/4/52 |
| article html file updated | 24 September 2019 01:30 CEST | Update | - |
| article html file updated | 4 May 2019 04:32 CEST | Update | - |
| article html file updated | 28 April 2017 10:01 CEST | Update | - |
| article html file updated | 30 March 2017 08:12 CEST | Original file | - |
| article xml uploaded. | 30 March 2017 08:11 CEST | Update | https://www.mdpi.com/2075-163X/7/4/52/xml |
| article pdf uploaded. | 30 March 2017 08:11 CEST | Updated version of record | https://www.mdpi.com/2075-163X/7/4/52/pdf |
| article pdf uploaded. | 29 March 2017 11:15 CEST | Version of Record | https://www.mdpi.com/2075-163X/7/4/52/pdf-vor |
