| article html file updated | 8 February 2020 14:16 CET | Update | https://www.mdpi.com/2079-9292/6/3/60 |
| article html file updated | 26 September 2019 17:00 CEST | Update | - |
| article html file updated | 3 May 2019 05:33 CEST | Update | - |
| article html file updated | 30 September 2017 07:50 CEST | Update | - |
| article html file updated | 23 August 2017 14:47 CEST | Original file | - |
| article xml uploaded. | 23 August 2017 14:46 CEST | Original file | https://www.mdpi.com/2079-9292/6/3/60/xml |
| article pdf uploaded. | 23 August 2017 14:46 CEST | Version of Record | https://www.mdpi.com/2079-9292/6/3/60/pdf |
