| article html file updated | 8 February 2020 13:13 CET | Update | https://www.mdpi.com/2076-3921/6/3/63 |
| article html file updated | 26 September 2019 11:16 CEST | Update | - |
| article html file updated | 3 May 2019 07:36 CEST | Update | - |
| article html file updated | 27 March 2019 20:09 CET | Update | - |
| article html file updated | 30 September 2017 11:19 CEST | Update | - |
| article html file updated | 10 August 2017 11:03 CEST | Original file | - |
| article xml uploaded. | 10 August 2017 11:01 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/63/xml |
| article pdf uploaded. | 10 August 2017 11:01 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/63/pdf |
