| article html file updated | 30 August 2025 02:41 CEST | Update | https://www.mdpi.com/2220-9964/7/2/68 |
| article html file updated | 16 July 2022 09:23 CEST | Update | N/A |
| article html file updated | 9 February 2020 07:11 CET | Update | N/A |
| article html file updated | 30 September 2019 22:28 CEST | Update | N/A |
| article html file updated | 1 May 2019 17:17 CEST | Update | N/A |
| article html file updated | 17 April 2019 16:39 CEST | Update | N/A |
| article html file updated | 29 March 2019 00:28 CET | Update | N/A |
| article html file updated | 14 March 2018 14:56 CET | Update | N/A |
| article html file updated | 22 February 2018 13:42 CET | Original file | N/A |
| article xml uploaded. | 22 February 2018 13:40 CET | Update | https://www.mdpi.com/2220-9964/7/2/68/xml |
| article xml uploaded. | 22 February 2018 13:40 CET | Update | N/A |
| article xml uploaded. | 22 February 2018 13:40 CET | Update | N/A |
| article xml uploaded. | 22 February 2018 13:40 CET | Original file | N/A |
| article pdf uploaded. | 22 February 2018 13:40 CET | Updated version of record | https://www.mdpi.com/2220-9964/7/2/68/pdf |
| article pdf uploaded. | 21 February 2018 13:47 CET | Version of Record | https://www.mdpi.com/2220-9964/7/2/68/pdf-vor |
