| article html file updated | 8 February 2020 09:33 CET | Update | https://www.mdpi.com/2076-3921/6/3/47 |
| article html file updated | 25 September 2019 15:11 CEST | Update | N/A |
| article html file updated | 3 May 2019 15:04 CEST | Update | N/A |
| article html file updated | 30 September 2017 11:17 CEST | Update | N/A |
| article html file updated | 29 June 2017 14:54 CEST | Original file | N/A |
| article xml uploaded. | 29 June 2017 14:53 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/47/xml |
| article pdf uploaded. | 29 June 2017 14:53 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/47/pdf |
