| article html file updated | 8 February 2020 02:40 CET | Update | https://www.mdpi.com/2079-8954/5/2/30 |
| article html file updated | 24 September 2019 02:41 CEST | Update | - |
| article html file updated | 4 May 2019 04:07 CEST | Update | - |
| article html file updated | 29 June 2017 11:52 CEST | Update | - |
| article html file updated | 6 April 2017 13:33 CEST | Original file | - |
| article xml uploaded. | 6 April 2017 13:32 CEST | Original file | https://www.mdpi.com/2079-8954/5/2/30/xml |
| article pdf uploaded. | 6 April 2017 13:32 CEST | Updated version of record | https://www.mdpi.com/2079-8954/5/2/30/pdf |
| article pdf uploaded. | 31 March 2017 14:47 CEST | Version of Record | https://www.mdpi.com/2079-8954/5/2/30/pdf-vor |
