1. Alemán-Pantitlán S, Millán-Pacheco C, Vázquez M, Hernández-Borja F, Villalobos-Molina R, Bazán-Perkins B, Estrada-Soto S (2016) Mechanism of relaxant Action of ethyl 6-amino-5-cyano-2-methyl-4-(pyridin-4-yl)-4H-pyran-3-carboxylate mainly through calcium channel blockade in isolated rat trachea. J Appl Pharm Sci 6:29–36
2. Bailey N (1995) Statistical methods in Biology. Cambridge University Press, Cambridge, UK, pp. 115–133
3. Black JL, Barnes PJ (1990) New drugs review Potassium channels and airway function: new therapeutic prospects. New drugs Rev 45:213–218
4. Buxton I Pharmacodynamics: Mechanisms of drug action and the relationship between drug concentration and effect. In: Goodman and Gilman’s The Pharmacological Basis of Therapeutic. 11th edn. Mc Graw Hill: New York, NY, 2006; pp. 1–117
5. ChemAxon. 2018. Marvin 18.16