- Kang, H. G., Costa, M. D., Priplata, A. A., Starobinets, O. V., Goldberger, A. L., Peng, C. K., ... & Lipsitz, L. A. (2009). Frailty and the degradation of complex balance dynamics during a dual-task protocol. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 64(12), 1304-1311.