Substituted tryptamine
A thorough investigation of dozens of tryptamine compounds was published by Ann and Alexander Shulgin under the title TiHKAL . 
<triplet> Ann <subj> Alexander Shulgin <obj> spouse <triplet> Alexander Shulgin <subj> Ann <obj> spouse <triplet> TiHKAL <subj> Alexander Shulgin <obj> author