TY  - RPRT
TI  - Sustained-release theophylline preparations.
AU  - M M Weinberger
PY  - 1990
DO  - 10.1016/0091-6749(90)90171-y
UR  - https://pubmed.ncbi.nlm.nih.gov/2303654/
ID  - 2303654
ER  -