| article html file updated | 9 February 2020 01:00 CET | Update | https://www.mdpi.com/2311-5521/3/1/2 |
| article html file updated | 2 May 2019 06:33 CEST | Update | - |
| article html file updated | 18 April 2019 04:28 CEST | Update | - |
| article html file updated | 28 March 2019 10:42 CET | Update | - |
| article html file updated | 27 March 2018 15:24 CEST | Update | - |
| article html file updated | 23 December 2017 09:38 CET | Original file | - |
| article xml uploaded. | 23 December 2017 09:36 CET | Update | https://www.mdpi.com/2311-5521/3/1/2/xml |
| article xml uploaded. | 23 December 2017 09:36 CET | Original file | - |
| article pdf uploaded. | 23 December 2017 09:36 CET | Version of Record | https://www.mdpi.com/2311-5521/3/1/2/pdf |
