Mamdouh, E., عماد, Mohammad Najeebb, W. and وفاء 2010. Properties of the yrast levels of 78-82Sr even-even isotops. Journal of Education and Science (JES). 23, 2 (Jun. 2010), 104–119. DOI:https://doi.org/10.33899/edusj.2010.58249.