16 Atoms MICROWAVE SPECTRA OF THE METHYLCYANOPOLYYNES CH3(CC)nCN, n = 2, 3, 4, 5 Wei Chen, J.-U.Grabow, M. J. Travers, Michaeleen R. Munrow, Stewart E. Novick, M. C. McCarthy, and P. Thaddeus Journal of Molecular Spectroscopy, 192: 1-11, 1998 link to paper