Khalifa, M. (1987). An introduction to multivariate life table analysis of birth intervals. test, 21(1), 24-46. doi: 10.21608/mskas.1987.303792
Mona Khalifa. "An introduction to multivariate life table analysis of birth intervals". test, 21, 1, 1987, 24-46. doi: 10.21608/mskas.1987.303792
Khalifa, M. (1987). 'An introduction to multivariate life table analysis of birth intervals', test, 21(1), pp. 24-46. doi: 10.21608/mskas.1987.303792
Khalifa, M. An introduction to multivariate life table analysis of birth intervals. test, 1987; 21(1): 24-46. doi: 10.21608/mskas.1987.303792