Biemann, K.. "High resolution mass spectrometry of natural products" Pure and Applied Chemistry, vol. 9, no. 1, 1964, pp. 95-118. https://doi.org/10.1351/pac196409010095
Biemann, K. (1964). High resolution mass spectrometry of natural products. Pure and Applied Chemistry, 9(1), 95-118. https://doi.org/10.1351/pac196409010095
Biemann, K. (1964) High resolution mass spectrometry of natural products. Pure and Applied Chemistry, Vol. 9 (Issue 1), pp. 95-118. https://doi.org/10.1351/pac196409010095
Biemann, K.. "High resolution mass spectrometry of natural products" Pure and Applied Chemistry 9, no. 1 (1964): 95-118. https://doi.org/10.1351/pac196409010095