| article html file updated | 8 February 2020 02:19 CET | Update | https://www.mdpi.com/2079-9276/6/2/15 |
| article html file updated | 24 September 2019 00:36 CEST | Update | - |
| article html file updated | 4 May 2019 04:53 CEST | Update | - |
| article html file updated | 29 June 2017 12:22 CEST | Update | - |
| article html file updated | 28 March 2017 09:48 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 09:27 CEST | Original file | https://www.mdpi.com/2079-9276/6/2/15/xml |
| article pdf uploaded. | 28 March 2017 09:27 CEST | Updated version of record | https://www.mdpi.com/2079-9276/6/2/15/pdf |
| article pdf uploaded. | 27 March 2017 10:07 CEST | Version of Record | https://www.mdpi.com/2079-9276/6/2/15/pdf-vor |
