Breimer DD, de Boer AG (December 1975). "Pharmacokinetics and relative bioavailability of heptabarbital and heptabarbital sodium after oral administration to man". European Journal of Clinical Pharmacology. 9 (2–3): 169–78. doi:10.1007/bf00614014. PMID9299. S2CID32380531.
Breimer DD, de Boer AG (December 1975). "Pharmacokinetics and relative bioavailability of heptabarbital and heptabarbital sodium after oral administration to man". European Journal of Clinical Pharmacology. 9 (2–3): 169–78. doi:10.1007/bf00614014. PMID9299. S2CID32380531.
Breimer DD, de Boer AG (December 1975). "Pharmacokinetics and relative bioavailability of heptabarbital and heptabarbital sodium after oral administration to man". European Journal of Clinical Pharmacology. 9 (2–3): 169–78. doi:10.1007/bf00614014. PMID9299. S2CID32380531.