| article html file updated | 8 February 2020 07:56 CET | Update | https://www.mdpi.com/2071-1050/9/6/978 |
| article html file updated | 25 September 2019 06:35 CEST | Update | - |
| article html file updated | 3 May 2019 18:06 CEST | Update | - |
| article html file updated | 28 June 2017 14:42 CEST | Update | - |
| article html file updated | 9 June 2017 15:32 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 15:31 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/978/xml |
| article pdf uploaded. | 9 June 2017 15:31 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/978/pdf |
