| article html file updated | 7 February 2020 21:13 CET | Update | https://www.mdpi.com/2079-9284/4/1/5 |
| article html file updated | 22 September 2019 20:03 CEST | Update | - |
| article html file updated | 4 May 2019 15:52 CEST | Update | - |
| article html file updated | 11 January 2017 10:21 CET | Original file | - |
| article xml uploaded. | 11 January 2017 10:20 CET | Original file | https://www.mdpi.com/2079-9284/4/1/5/xml |
| article pdf uploaded. | 11 January 2017 10:20 CET | Version of Record | https://www.mdpi.com/2079-9284/4/1/5/pdf |
