Guerra, Leandro Jose, 		Basco, Flordivino, AND 		Sarmago, Roland.
" Experimental Observation of Non-'S-Wave' Superconducting Behavior in Bulk Superconducting Tunneling Junctions of Yba<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>" <em>Science Diliman: A Journal of Pure and Applied Sciences</em> [Online], Volume 10 Number 1 (19 September 2007)