“Theory and Bioethics,” from the Stanford Encyclopedia of Philosophy
http://plato.stanford.edu/entries/theory-bioethics/
John Arras, “The Way We Reason Now: Reflective Equilibrium in Bioethics,” in B. Steinbock, ed., Oxford Handbook of Bioethics (New York: Oxford University Press, 2007).
A. R. Jonsen, “Casuistry: An Alternative or Complement to Principles?” Kennedy Institute of Ethics Journal 5, no. 3 (September 1995): 237–51.
K. Danner Clouser, “Common Morality as an Alternative to Principlism,” Kennedy Institute of Ethics Journal 5, no. 3 (September 1995): 219–36.
Martha Nussbaum, “Why Practice Needs Ethical Theory,” in Margaret Olivia Little and Brad Hooker, eds., Moral Particularism (New York: Oxford University Press, 2000), 227–55.