SYNTHETIC STUDIES IN THE ALKALOID FIELD. VI. PREPARATION OF THE DIASTEREOISOMERIC MIXTURES OF 1,4,6,7,12,12B-HEXAHYDRO-3-(1-HYDROXYETHYL)-INDOLO (2,3-A)-QUINOLIZINES.LOUNASMAA M; PUHAKKA M.1978; ACTA CHEM. SCAND., B; DANEM.; DA. 1978; VOL. 32; NO 1; PP. 77-78; BIBL. 7 REF.Article

SYNTHETIC STUDIES IN THE ALKALOID FIELD. VIII. THE SODIUM BOROHYDRIDE REDUCTION OF 3-ACETYL-1-(2-(3-INDOLYL)-ETHYL)-PYRIDINIUM BROMIDE.LOUNASMAA M; PUHAKKA M.1978; ACTA CHEM. SCAND., B; DANEM.; DA. 1978; VOL. 32; NO 3; PP. 216-220; BIBL. 24 REF.Article

STEREOSELECTIVE REDUCTION OF 1-ACETYL-3,4,6,7,12, 12B-HEXAHYDROINDOLO (2,3-A) QUINOLIZINE TO THE CORRESPONDING 1-(1-HYDROXYETHYL) DERIVATIVELOUNASMAA M; PUHAKKA M.1978; PLANTA MED.; DEU; DA. 1978; VOL. 34; NO 2; PP. 180-182; BIBL. 11 REF.Article

SYNTHETIC STUDIES IN THE ALKALOID FIELD. X. PREPARATION AND STEREOSTRUCTURE DETERMINATION OF SEVERAL INDOLO (2,3-A) QUINOLIZINE DERIVATIVESLOUNASMAA M; MERIKALLIO H; PUHAKKA M et al.1978; TETRAHEDRON; GBR; DA. 1978; VOL. 34; NO 19; PP. 2995-2999; BIBL. 17 REF.Article

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Upper Amazon channel migration : implications for vegetation perturbance and succession using bitemporal landsat MSS imagesKALLIOLA, R; SALO, J; PUHAKKA, M et al.Naturwissenschaften. 1992, Vol 79, Num 2, pp 75-79, issn 0028-1042Article