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1Kalvins Ivars; Erenshtein Marina; Bremanis Gunars; Mikazhan Valdis; Veveris Maris; Lukevits Edmunds; Pule Edit; Birmans Anatolijs. Anti-hypertensive compositions containing pyrazole derivatives. FR2548899, 06.01.1989.      

2Bremanis Gunars; Antsena Irene; Kalvins Ivars; Lukevics Edmunds; Veveris Maris; Kauss Valerjans; Trapencieris Peteris. Substituted 3-hydrazinopropionates. CA1249299, 24.01.1989.      

3Makarova Natalya; Bisenieks Egils; Uldrikis Janis; Duburs Gunars; Veveris Maris; Kimenis Agris. Alkoxy-and phenoxy alkyl esters of 2,6-dimethyl-4-(2-difluoromethoxyphenyl)-1,4-dihydropyridine-3,5-. US4845109, 04.07.1989.      

4Makarova Natalya; Bisenieks Egils; Uldrikis Janis; Duburs Gunars; Veveris Maris; Kimenis Agris. Alkoxy-and phenoxy alkyl esters of 2,6-dimethyl-4-(2-difluoromethoxyphenyl)-1,4-dihydropyridine-3,5-. GB2180532, 23.08.1989.      

5Kalvins Ivars; Vinogradovs Aleksejs; Veveris Maris; Makarova Inna; Birmans Anatolijs; Barmotin Georgy; Akifiev Oleg. Treatment of cardio-vascular diseases with 3-(2,2,2-trimethylhydrazinium) propionate dihydrate. IT1210935, 29.09.1989.      

6Kalvins Ivars; Vinogradovs Aleksejs; Veveris Maris; Makarova Inna; Birmans Anatolijs; Barmotin Georgy; Akifiev Oleg. Treatment of cardio-vascular diseases with 3-(2,2,2-trimethylhydrazinium) propionate dihydrate. IT1210935, 29.09.1989.      

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