| article html file updated | 8 February 2020 04:56 CET | Update | https://www.mdpi.com/2079-9284/4/2/12 |
| article html file updated | 24 September 2019 15:10 CEST | Update | N/A |
| article html file updated | 3 May 2019 23:43 CEST | Update | N/A |
| article html file updated | 23 May 2017 03:33 CEST | Update | N/A |
| article html file updated | 3 May 2017 15:43 CEST | Original file | N/A |
| article xml uploaded. | 3 May 2017 15:42 CEST | Original file | https://www.mdpi.com/2079-9284/4/2/12/xml |
| article pdf uploaded. | 3 May 2017 15:42 CEST | Version of Record | https://www.mdpi.com/2079-9284/4/2/12/pdf |
