1) Abeloff, M.D., Eggleston, J.C., Mendelson, G., et al.: Changes in morphologic and biochemical characteristics of small cell carcinoma of the lung. Am. J. Med., 66: 757-764, 1979.
2) Radice, P.A., Matthews, M.J., Ihde, D.C., et al.: The clinical behavior of mixed small cell/large cell bronchogenic carcinoma compared to pure small cell carcinoma. Cancer, 50: 2894-2902, 1982.