Gelfand, H. M., Bose, P. N., Sehgal, P. N., Mukherjee, R. N., & Ramakrishnan, S. P. (1966). Epidemiological observations on the outbreak of acute haemorrhagic fever in Calcutta in 1963.

Gelfand, H. M., P. N. Bose, P. N. Sehgal, R. N. Mukherjee, and S. P. Ramakrishnan. Epidemiological Observations On the Outbreak of Acute Haemorrhagic Fever in Calcutta in 1963. 1966.

Gelfand, H. M., et al. Epidemiological Observations On the Outbreak of Acute Haemorrhagic Fever in Calcutta in 1963. 1966.