| article html file updated | 8 February 2020 04:31 CET | Update | https://www.mdpi.com/2079-9292/6/2/34 |
| article html file updated | 24 September 2019 12:54 CEST | Update | N/A |
| article html file updated | 4 May 2019 00:31 CEST | Update | N/A |
| article html file updated | 28 June 2017 13:01 CEST | Update | N/A |
| article html file updated | 27 April 2017 14:48 CEST | Original file | N/A |
| article xml uploaded. | 27 April 2017 14:47 CEST | Original file | https://www.mdpi.com/2079-9292/6/2/34/xml |
| article pdf uploaded. | 27 April 2017 14:47 CEST | Version of Record | https://www.mdpi.com/2079-9292/6/2/34/pdf |
