共 18 条
[4]
Gardner CR, 1985, DIRECTED DRUG DELIVE, P61
[6]
HEDDLE R, 1986, GASTROENTEROLOGY, V90, P1454
[7]
Kelly KA, 1981, PHYSL GASTROINTESTIN, P393
[9]
MAMAJEK RC, 1980, Patent No. 4207890
[10]
MEYER JH, 1981, GASTROENTEROLOGY, V80, P1489