| article html file updated | 7 February 2020 23:08 CET | Update | https://www.mdpi.com/2311-553X/3/1/8 |
| article html file updated | 23 September 2019 06:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:45 CEST | Update | N/A |
| article html file updated | 30 March 2017 11:32 CEST | Update | N/A |
| article html file updated | 21 March 2017 02:22 CET | Original file | N/A |
| article xml uploaded. | 21 March 2017 02:21 CET | Original file | https://www.mdpi.com/2311-553X/3/1/8/xml |
| article pdf uploaded. | 21 March 2017 02:21 CET | Updated version of record | https://www.mdpi.com/2311-553X/3/1/8/pdf |
| article pdf uploaded. | 10 February 2017 16:15 CET | Version of Record | https://www.mdpi.com/2311-553X/3/1/8/pdf-vor |
