Bucchi S,Vogelin R,Von Eiff MM,Ramos M,Melzer J,open trial to assess aspect of safety and efficacy of a combined herbal cough syrup with ivy and thyme.Torsch komplementarmed klass,Naturheilkd 2005 Dec 10:328-32
1.Nosal Ova G,Strapkova A,Kardosova A,Capek P,Zathureck L,Bukovaka E(Antitissve action of extracts and polysaccharides of marshmallow L,var,robusta) Pharmazie 1992;47(3) 224-226
2.Scbulz V,Hansel R,Tyler V,Rational Phytotherapy;A,Physician guide to herbal Medicine,4th Berlin Germany Springer,2000:29,182
3.Sutovska M,Nosalova G,Tranova S,KArdosova A:The antirussive activity of polysaccharides from althea officinalis L,Var Robusta,Arcrium Lappa L…var Herkules And prumus persica L,Batsch Bratist Lek Listy 2007:108(2):93-9