H. Nie, Z. Dong, D. Y. Arifin, Y. Hu and C.-H. Wang, “Core/Shell Microspheres via Coaxial Electrohydrodynamic Atomization for Sequential and parallel Release of Drugs,” Journal of Biomedical Materials Research Part A, Vol. 95, No. 3, 2010, pp. 709-716.
doi:10.1002/jbm.a.32867