| article html file updated | 8 February 2020 07:29 CET | Update | https://www.mdpi.com/2073-4425/8/6/157 |
| article html file updated | 25 September 2019 04:15 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:58 CEST | Update | N/A |
| article html file updated | 27 June 2017 10:37 CEST | Update | N/A |
| article html file updated | 5 June 2017 09:37 CEST | Original file | N/A |
| article xml uploaded. | 5 June 2017 09:36 CEST | Update | https://www.mdpi.com/2073-4425/8/6/157/xml |
| article pdf uploaded. | 5 June 2017 09:35 CEST | Version of Record | https://www.mdpi.com/2073-4425/8/6/157/pdf |
