| article html file updated | 9 February 2020 04:24 CET | Update | https://www.mdpi.com/2306-5729/3/1/6 |
| article html file updated | 1 May 2019 23:27 CEST | Update | - |
| article html file updated | 17 April 2019 22:02 CEST | Update | - |
| article html file updated | 28 March 2019 18:28 CET | Update | - |
| article html file updated | 28 March 2018 11:11 CEST | Update | - |
| article html file updated | 26 January 2018 06:59 CET | Original file | - |
| article xml uploaded. | 26 January 2018 06:58 CET | Original file | https://www.mdpi.com/2306-5729/3/1/6/xml |
| article pdf uploaded. | 26 January 2018 06:58 CET | Version of Record | https://www.mdpi.com/2306-5729/3/1/6/pdf |
