1. K. Suzuki et al., Design and Synthesis of Calcium and Magnesium Ionophores Based on Double-Armed Diazacrown Ether Compounds and Their Application to an Ion-Sensing Component for an Ion-Selective Electrode Anal. Chem. 67, 324, (1995) 2. H. Hisamoto et al., Flow-through type calcium ion selective optodes based on novel neutral ionophoores and a lipophilic anionic dye Anal. Chim. Acta 299, 179, (1994) 3. K. Kim et al., Active optical thin-film waveguide sensor for ion sensing Anal. Chim. Acta 343, 199, (1997) T. Yu et al., Amlodipine Modulates THP-1 Cell Adhesion to Vascular Endothelium via Inhibition of Protein Kinase C Signal Transduction. Hypertension 42, 329, (2003)