| article html file updated | 8 February 2020 13:25 CET | Update | https://www.mdpi.com/2076-3921/6/3/64 |
| article html file updated | 26 September 2019 12:26 CEST | Update | - |
| article html file updated | 3 May 2019 07:11 CEST | Update | - |
| article html file updated | 27 March 2019 20:35 CET | Update | - |
| article html file updated | 30 September 2017 11:19 CEST | Update | - |
| article html file updated | 12 August 2017 11:39 CEST | Original file | - |
| article xml uploaded. | 12 August 2017 11:38 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/64/xml |
| article pdf uploaded. | 12 August 2017 11:38 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/64/pdf |
