| article html file updated | 8 February 2020 01:38 CET | Update | https://www.mdpi.com/2076-0760/6/1/33 |
| article html file updated | 4 May 2019 06:19 CEST | Update | N/A |
| article html file updated | 17 March 2017 07:51 CET | Original file | N/A |
| article xml uploaded. | 17 March 2017 07:50 CET | Original file | https://www.mdpi.com/2076-0760/6/1/33/xml |
| article pdf uploaded. | 17 March 2017 07:50 CET | Version of Record | https://www.mdpi.com/2076-0760/6/1/33/pdf |
