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| 2021-07-01 | Reference included | | | Meyer, 1794 |
| 2021-07-01 | Reference included | | | Al-Khazali, 2021a |
| 2021-07-01 | Reference included | | | Indzhov, 2021 |
| 2021-07-01 | Reference included | | | Turbanov, Nadolny & Turbanova, 2021 |
| 2021-06-29 | Reference included | | | Silva-Moreira & Hormiga, 2021 |
| 2021-06-28 | Reference included | | | Sebastian & Peter, 2009 |
| 2021-06-27 | Reference included | | | Tanasevitch, 2021d |
| 2021-06-27 | Reference included | | | Omelko & Marusik, 2021 |
| 2021-06-27 | Reference included | | | Esyunin & Efimik, 2021 |
| 2021-06-27 | Reference included | | | Prajapati et al., 2021 |
| 2021-06-27 | Reference included | | | Caleb et al., 2021 |
| 2021-06-27 | Reference included | | | Marusik & Omelko, 2021a |
| 2021-06-24 | Reference included | | | Oliveira & Brescovit, 2021a |
| 2021-06-24 | Reference included | | | Borges, Paladini & Bertani, 2021 |
| 2021-06-23 | Reference included | | | Tanasevitch, 2021c |
| 2021-06-22 | Reference included | | | Machado & Teixeira, 2021 |
| 2021-06-22 | Reference included | | | Suarez-Martinez & Bedoya-Róqueme, 2021 |
| 2021-06-21 | Reference included | | | Lee & Kim, 2021 |
| 2021-06-19 | Reference included | | | Geci & Naumova, 2021 |
| 2021-06-15 | Reference included | | | Ghirotto, Guadanucci & Indicatti, 2021 |
| 2021-06-15 | Reference included | | | Huber, Pavlek & Komnenov, 2021 |
| 2021-06-13 | Reference included | | | Coşar, 2021c |
| 2021-06-10 | Reference included | | | Naumova, Blagoev & Deltshev, 2021 |
| 2021-06-10 | Reference included | | | Jäger, 2021b |
| 2021-06-10 | Reference included | | | Huber, 2021 |
| 2021-06-10 | Reference included | | | Decae, Schwendinger & Hongpadharakiree, 2021 |
| 2021-06-10 | Reference included | | | Suzuki, Aung & Ono, 2021 |
| 2021-06-10 | Reference included | | | Zhu & Li, 2021c |
| 2021-06-10 | Reference included | | | Schult, Preik & Kirschner, 2021 |
| 2021-06-05 | Reference included | | | Cai, Lin & Zhong, 2021 |
| 2021-06-05 | Reference included | | | Zamani et al., 2021a |
| 2021-06-03 | Reference included | | | Rubio, 2021 |
| 2021-06-02 | Reference included | | | Orozco-Gil & Desales-Lara, 2021 |
| 2021-06-02 | Reference included | | | Crespo et al., 2021a |
| 2021-06-02 | Reference included | | | Danışman & Erdek, 2021 |
| 2021-06-02 | Reference included | | | Coşar, 2021b |
| 2021-06-02 | Reference included | | | Akhtar & Summer, 2021 |
| 2021-06-02 | Reference included | | | Prasad et al., 2021a |
| 2021-06-01 | Reference included | | | Prajapati, 2021 |
| 2021-05-28 | Reference included | | | Danışman & Coşar, 2021b |
| 2021-05-28 | Reference included | | | Lu, Wu & Zhang, 2021 |
| 2021-05-28 | Reference included | | | Wei, Li & Lin, 2021 |
| 2021-05-28 | Reference included | | | Ying et al., 2021 |
| 2021-05-28 | Reference included | | | Yu, Zhang & Zhang, 2021b |
| 2021-05-28 | Reference included | | | Arnedo & Hormiga, 2021 |
| 2021-05-28 | Reference included | | | Wang, Wang & Peng, 2021 |
| 2021-05-28 | Reference included | | | Yu, Zhang & Zhang, 2021a |
| 2021-05-28 | Reference included | | | Liu, Zhang & Chen, 2021 |
| 2021-05-28 | Reference included | | | Chen et al., 2021b |