| article html file updated | 8 February 2020 03:16 CET | Update | https://www.mdpi.com/2309-608X/3/2/18 |
| article html file updated | 4 May 2019 02:48 CEST | Update | N/A |
| article html file updated | 10 April 2017 14:35 CEST | Original file | N/A |
| article xml uploaded. | 10 April 2017 14:34 CEST | Original file | https://www.mdpi.com/2309-608X/3/2/18/xml |
| article pdf uploaded. | 10 April 2017 14:34 CEST | Version of Record | https://www.mdpi.com/2309-608X/3/2/18/pdf |
