| article html file updated | 8 February 2020 05:55 CET | Update | https://www.mdpi.com/2079-9284/4/2/15 |
| article html file updated | 24 September 2019 20:16 CEST | Update | N/A |
| article html file updated | 3 May 2019 21:55 CEST | Update | N/A |
| article html file updated | 23 May 2017 04:16 CEST | Update | N/A |
| article html file updated | 16 May 2017 07:43 CEST | Original file | N/A |
| article xml uploaded. | 16 May 2017 07:42 CEST | Original file | https://www.mdpi.com/2079-9284/4/2/15/xml |
| article pdf uploaded. | 16 May 2017 07:42 CEST | Version of Record | https://www.mdpi.com/2079-9284/4/2/15/pdf |
