| article html file updated | 8 February 2020 02:21 CET | Update | https://www.mdpi.com/2075-1729/7/2/15 |
| article html file updated | 24 September 2019 00:49 CEST | Update | - |
| article html file updated | 4 May 2019 04:49 CEST | Update | - |
| article html file updated | 30 June 2017 05:46 CEST | Update | - |
| article html file updated | 27 March 2017 13:06 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 13:04 CEST | Update | https://www.mdpi.com/2075-1729/7/2/15/xml |
| article pdf uploaded. | 27 March 2017 13:04 CEST | Version of Record | https://www.mdpi.com/2075-1729/7/2/15/pdf |
