'A' cited 'B'.

'A'
Title: Highly efficient generation of entangled photon pair by spontaneous parametric downconversion in defective photonic crystals
Author(s): Zeng Y (Zeng, Yong), Fu Y (Fu, Ying), Chen XS (Chen, Xiaoshuang), Lu W (Lu, Wei), Agren H (Agren, Hans)
Source: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 24 (6): 1365-1368 JUN 2007
Authors' addresses:
Royal Inst Technol, Dept Theoret Chem, S-10691 Stockholm, Sweden
Chinese Acad Sci, Shanghai Inst Tech Phys, Lab Infrared Phys, Shanghai 200083, Peoples R China
Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China

'B'
Title: Matrix analysis for layered quasi-phase-matched media considering multiple reflection and pump wave depletion
Author(s): Jeong Y, Lee B
Source: IEEE JOURNAL OF QUANTUM ELECTRONICS 35 (2): 162-172 FEB 1999