"Top 50 Most Cited Articles as published in Tetrahedron 2004-2007:" Bismuth compounds in organic synthesis. Bismuth nitrate catalyzed chemoselective synthesis of acylals from aromatic aldehydes. Aggen, D.A., Arnold, J.N., Hayes, P.D., Smoter, N.M., Mohan, R.S., 2004, 60, 3675.