Tucker et al. 1970

Tucker, K.D., G.R. Tomasevich, and P. Thaddeus, 1970: Precise laboratory measurement of the 4830-MHZ formaldehyde rotational transition. Astrophys. J., 161, L153-L154, doi:10.1086/180590.

The frequencies of the hyperfine components of the 1₁₀→1₁₁ rotational transition of H₂CO have been measured with a molecular-beam maser to an absolute precision of about 1 part in 10⁸.

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Tucker, K.D., Tomasevich, G.R., and Thaddeus, P.: Precise laboratory measurement of the 4830-MHZ formaldehyde rotational transition, Astrophys. J., 161, L153-L154, doi:10.1086/180590, 1970.

Tucker, K.D., G.R. Tomasevich, and P. Thaddeus (1970), Precise laboratory measurement of the 4830-MHZ formaldehyde rotational transition, Astrophys. J., 161, L153-L154, doi:10.1086/180590.

Tucker, K.D., G.R. Tomasevich, and P. Thaddeus, 1970: Precise laboratory measurement of the 4830-MHZ formaldehyde rotational transition. Astrophys. J., 161, L153-L154, doi:10.1086/180590.

Tucker, K.D., Tomasevich, G.R., & Thaddeus, P. 1970, Astrophys. J., 161, L153, doi:10.1086/180590.

Tucker KD, Tomasevich GR, Thaddeus P. Precise laboratory measurement of the 4830-MHZ formaldehyde rotational transition, Astrophys J 1970;161:L153-L154. doi:10.1086/180590.

K.D. Tucker, G.R. Tomasevich, P. Thaddeus, Astrophys. J. 161, L153-L154, doi:10.1086/180590 (1970).