Microwave and Modulated Optical Reflectance Studies of YBCO Thin Films. - Huish, David W.; Velichko, Anton V.; Lancaster, Michael J.; Abell, J. Stuart; Xuming Xiong; Almond, Darryl P.; Hyland, David; Perry, Andy; Porch, Adrian (IEEE Transactions on Applied Superconductivity, 2003)