| article html file updated | 8 February 2020 07:33 CET | Update | https://www.mdpi.com/2073-4425/8/6/156 |
| article html file updated | 25 September 2019 04:39 CEST | Update | - |
| article html file updated | 3 May 2019 18:49 CEST | Update | - |
| article html file updated | 27 June 2017 10:36 CEST | Update | - |
| article html file updated | 6 June 2017 14:17 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 14:16 CEST | Original file | https://www.mdpi.com/2073-4425/8/6/156/xml |
| article pdf uploaded. | 6 June 2017 14:16 CEST | Version of Record | https://www.mdpi.com/2073-4425/8/6/156/pdf |
