| article html file updated | 8 February 2020 09:08 CET | Update | https://www.mdpi.com/2076-3921/6/3/45 |
| article html file updated | 25 September 2019 12:58 CEST | Update | - |
| article html file updated | 3 May 2019 15:51 CEST | Update | - |
| article html file updated | 30 September 2017 11:19 CEST | Update | - |
| article html file updated | 24 June 2017 08:33 CEST | Original file | - |
| article xml uploaded. | 24 June 2017 08:32 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/45/xml |
| article pdf uploaded. | 24 June 2017 08:32 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/45/pdf |
