| article html file updated | 8 February 2020 05:20 CET | Update | https://www.mdpi.com/2079-9284/4/2/13 |
| article html file updated | 24 September 2019 17:09 CEST | Update | N/A |
| article html file updated | 3 May 2019 23:02 CEST | Update | N/A |
| article html file updated | 23 May 2017 03:52 CEST | Update | N/A |
| article html file updated | 8 May 2017 12:25 CEST | Original file | N/A |
| article xml uploaded. | 8 May 2017 12:24 CEST | Original file | https://www.mdpi.com/2079-9284/4/2/13/xml |
| article pdf uploaded. | 8 May 2017 12:24 CEST | Version of Record | https://www.mdpi.com/2079-9284/4/2/13/pdf |
