| article html file updated | 7 February 2020 10:29 CET | Update | https://www.mdpi.com/2079-9284/3/2/20 |
| article html file updated | 5 May 2019 12:20 CEST | Update | N/A |
| article html file updated | 27 March 2019 08:02 CET | Update | N/A |
| article html file updated | 21 June 2016 15:14 CEST | Original file | N/A |
| article xml uploaded. | 21 June 2016 15:13 CEST | Original file | https://www.mdpi.com/2079-9284/3/2/20/xml |
| article pdf uploaded. | 21 June 2016 15:13 CEST | Version of Record | https://www.mdpi.com/2079-9284/3/2/20/pdf |
