| article html file updated | 8 February 2020 14:32 CET | Update | https://www.mdpi.com/2073-4344/7/9/252 |
| article html file updated | 26 September 2019 18:24 CEST | Update | - |
| article html file updated | 3 May 2019 05:02 CEST | Update | - |
| article html file updated | 26 September 2017 06:18 CEST | Update | - |
| article html file updated | 27 August 2017 04:04 CEST | Original file | - |
| article xml uploaded. | 27 August 2017 04:03 CEST | Original file | https://www.mdpi.com/2073-4344/7/9/252/xml |
| article pdf uploaded. | 27 August 2017 04:03 CEST | Updated version of record | https://www.mdpi.com/2073-4344/7/9/252/pdf |
| article pdf uploaded. | 25 August 2017 14:52 CEST | Version of Record | https://www.mdpi.com/2073-4344/7/9/252/pdf-vor |
