| article html file updated | 7 February 2020 19:47 CET | Update | https://www.mdpi.com/2308-3417/1/4/33 |
| article html file updated | 22 September 2019 12:24 CEST | Update | - |
| article html file updated | 4 May 2019 18:51 CEST | Update | - |
| article html file updated | 16 December 2016 11:09 CET | Original file | - |
| article xml uploaded. | 16 December 2016 11:08 CET | Original file | https://www.mdpi.com/2308-3417/1/4/33/xml |
| article pdf uploaded. | 16 December 2016 11:08 CET | Version of Record | https://www.mdpi.com/2308-3417/1/4/33/pdf |
