1. ANTOINE, J.W., BULLETIN OF THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS 49: 601 (1965).
2. APPLIN, P.L., BULLETIN OF THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS 28: 1673 (1944).
3. BERGGREN, W.A., MICROPALEONTOLOGY 9: 467 (1963).
4. Some Problems of Paleocene-Lower Eocene Planktonic Foraminiferal Correlations
5. BLOW, W.H., BULLETINS OF AMERICAN PALEONTOLOGY 39: 128 (1959).