Collera, J. A., & Roque, M. P. (2013). Admissible perturbations of differential expressions with exponentially decaying coefficients preserving the nullities. https://doi.org/10.12988/ijma.2013.310250
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Collera, Juancho A., و Marian P. Roque. Admissible Perturbations of Differential Expressions with Exponentially Decaying Coefficients Preserving the Nullities. 2013. https://doi.org/10.12988/ijma.2013.310250.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Collera, Juancho A., و Marian P. Roque. Admissible Perturbations of Differential Expressions with Exponentially Decaying Coefficients Preserving the Nullities. 2013. https://doi.org/10.12988/ijma.2013.310250.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.