| article html file updated | 8 February 2020 18:38 CET | Update | https://www.mdpi.com/2075-4418/7/4/55 |
| article html file updated | 27 September 2019 19:32 CEST | Update | N/A |
| article html file updated | 2 May 2019 20:52 CEST | Update | N/A |
| article html file updated | 2 January 2018 15:30 CET | Update | N/A |
| article html file updated | 17 October 2017 14:36 CEST | Original file | N/A |
| article xml uploaded. | 17 October 2017 14:35 CEST | Original file | https://www.mdpi.com/2075-4418/7/4/55/xml |
| article pdf uploaded. | 17 October 2017 14:35 CEST | Updated version of record | https://www.mdpi.com/2075-4418/7/4/55/pdf |
| article pdf uploaded. | 17 October 2017 10:59 CEST | Version of Record | N/A |
