COLLISION‐INDUCED DISSOCIATION STUDY OF CYCLIZATION OF Α‐DIAZO‐Ω‐ARYLSULPHONYLAMINOALKAN‐2‐ONES Article Lebedev A.T., Samguina T.Y., Petrosyan V.S., Blumenthal T., Sipyaguin A.M., Kartsev V.G. Organic Mass Spectrometry. Vol. 27. 1992. P. 730-735