Springsteel, Mark F.; Galietta, Luis J. V.; Ma, Tonghui; By, Kolbot; Berger, Gideon O.; Yang, Hong; Dicus, Christopher W.; Choung, Wonken; Quan, Chao; Shelat, Anang A.; Guy, R. Kiplin; Verkman; Kurth, Mark J.; Nantz, Michael H. Bioorganic and Medicinal Chemistry, 2003 , vol. 11, # 18 p. 4113 - 4120