Delaisse, JM., Eeckhout, Y., & Vaes, G. (1985). Bisphosphonates and Bone-resorption - Effects On Collagenase and Lysosomal-enzyme Excretion. Life Sciences, 37(24), 2291-2296. https://doi.org/10.1016/0024-3205(85)90020-7 (Original work published 1985)