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DIPOLE STABILIZED ALPHA -AMINO CARBANIONS. II: ALKYLATION OF TETRAHYDROISOQUINOLINES IN THE 1-POSITIONMEYERS AI; HELLRING S; HOEVE WT et al.1981; TETRAHEDRON LETT.; ISSN 0040-4039; GBR; DA. 1981; VOL. 22; NO 51; PP. 5115-5118; BIBL. 9 REF.Article

Laser-induced thermal desorption (LITD) from zeolites : apparatus and technique for rapid, in vacuo sample desorption for FTi.r. analysisHELLRING, S. D; GREEN, G. J.Zeolites. 1994, Vol 14, Num 1, pp 3-6, issn 0144-2449Article

On the existence and role of free radicals in methanol conversion to hydrocarbons over HZSM-5. I: Inhibition by NOCHANG, C. D; HELLRING, S. D; PEARSON, J. A et al.Journal of catalysis (Print). 1989, Vol 115, Num 1, pp 282-285, issn 0021-9517Article