| article html file updated | 8 February 2020 16:39 CET | Update | https://www.mdpi.com/2076-3921/6/3/72 |
| article html file updated | 27 September 2019 06:05 CEST | Update | N/A |
| article html file updated | 3 May 2019 01:07 CEST | Update | N/A |
| article html file updated | 30 September 2017 11:19 CEST | Update | N/A |
| article html file updated | 20 September 2017 07:34 CEST | Original file | N/A |
| article xml uploaded. | 20 September 2017 07:32 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/72/xml |
| article pdf uploaded. | 20 September 2017 07:32 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/72/pdf |
