| article html file updated | 8 February 2020 16:32 CET | Update | https://www.mdpi.com/1999-5903/9/3/52 |
| article html file updated | 27 September 2019 05:25 CEST | Update | N/A |
| article html file updated | 3 May 2019 01:20 CEST | Update | N/A |
| article html file updated | 30 September 2017 14:02 CEST | Update | N/A |
| article html file updated | 18 September 2017 15:33 CEST | Original file | N/A |
| article xml uploaded. | 18 September 2017 15:32 CEST | Original file | https://www.mdpi.com/1999-5903/9/3/52/xml |
| article pdf uploaded. | 18 September 2017 15:32 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/3/52/pdf |
