Von Figura, K., & Weber, E.(1978). An alternative hypothesis of cellular transport of lysosomal enzymes in fibroblasts. Effect of inhibitors of lysosomal enzyme endocytosis on intra- and extra-cellular lysosomal enzyme activities. Biochemical Journal, 176(3), 943-950. doi:10.1042/bj1760943

Von Figura, Kurt, and Ernst Weber. "An Alternative Hypothesis of Cellular Transport of Lysosomal Enzymes in Fibroblasts. Effect of Inhibitors of Lysosomal Enzyme Endocytosis On Intra- and Extra-cellular Lysosomal Enzyme Activities". Biochemical Journal, 176.3 ( 1978 ): 943-950.