TY - JOUR IS - 5 JA - Phys Lett A JO - Physics Letters A PY - 1973 SN - 0375-9601 VL - 43 AU - Helfrich W LA - en N1 - FEMU ID: 22175; EMF-Portal URL: https://www.emf-portal.org/en/article/22175 SP - 409-410 TI - Lipid bilayer spheres: Deformation and birefringence in magnetic fields ER -