| article html file updated | 7 February 2020 21:33 CET | Update | https://www.mdpi.com/2409-9287/2/1/5 |
| article html file updated | 22 September 2019 21:52 CEST | Update | - |
| article html file updated | 4 May 2019 15:05 CEST | Update | - |
| article html file updated | 16 January 2017 11:48 CET | Original file | - |
| article xml uploaded. | 16 January 2017 11:47 CET | Original file | https://www.mdpi.com/2409-9287/2/1/5/xml |
| article pdf uploaded. | 16 January 2017 11:47 CET | Version of Record | https://www.mdpi.com/2409-9287/2/1/5/pdf |
