| article html file updated | 8 February 2020 02:08 CET | Update | https://www.mdpi.com/2311-553X/3/2/18 |
| article html file updated | 23 September 2019 23:44 CEST | Update | - |
| article html file updated | 4 May 2019 05:15 CEST | Update | - |
| article html file updated | 29 June 2017 11:40 CEST | Update | - |
| article html file updated | 27 March 2017 13:58 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 13:57 CEST | Original file | https://www.mdpi.com/2311-553X/3/2/18/xml |
| article pdf uploaded. | 27 March 2017 13:57 CEST | Updated version of record | https://www.mdpi.com/2311-553X/3/2/18/pdf |
| article pdf uploaded. | 24 March 2017 16:24 CET | Version of Record | https://www.mdpi.com/2311-553X/3/2/18/pdf-vor |
