| article html file updated | 8 February 2020 08:19 CET | Update | https://www.mdpi.com/2079-9276/6/2/22 |
| article html file updated | 3 May 2019 17:25 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:23 CEST | Update | N/A |
| article html file updated | 15 June 2017 05:35 CEST | Original file | N/A |
| article xml uploaded. | 15 June 2017 05:34 CEST | Original file | https://www.mdpi.com/2079-9276/6/2/22/xml |
| article pdf uploaded. | 15 June 2017 05:34 CEST | Version of Record | https://www.mdpi.com/2079-9276/6/2/22/pdf |
