RT Article T1 Using open-source data to better understand and respond to American school shootings: Introducing and exploring the American School Shooting Study (TASSS) JF Journal of school violence VO 21 IS 2 SP 93 OP 118 A1 Freilich, Joshua D. A1 Greene-Colozzi, Emily A. A1 Klein, Brent R. A1 Connell, Nadine M. 1979- A1 Chermak, Steven M. 1964- A2 Greene-Colozzi, Emily A. A2 Klein, Brent R. A2 Connell, Nadine M. 1979- A2 Chermak, Steven M. 1964- LA English YR 2022 UL https://krimdok.uni-tuebingen.de/Record/191273933X DO 10.1080/15388220.2021.1991804