| article html file updated | 8 February 2020 04:28 CET | Update | https://www.mdpi.com/2079-9276/6/2/18 |
| article html file updated | 4 May 2019 00:36 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:22 CEST | Update | N/A |
| article html file updated | 26 April 2017 15:04 CEST | Original file | N/A |
| article xml uploaded. | 26 April 2017 15:03 CEST | Original file | https://www.mdpi.com/2079-9276/6/2/18/xml |
| article pdf uploaded. | 26 April 2017 15:03 CEST | Version of Record | https://www.mdpi.com/2079-9276/6/2/18/pdf |
