Potent and selective inhibition of nitric oxide-sensitive guanylyl cyclase by 1H[1,2,4]oxadiazolo[4,3-a] quinoxalin-1-one - Garthwaite,J.; Southam,E.; Boulton,C.L.; Nielsen,E.B.; Schmidt,K.; Mayer,B. (Mol Pharmacol, 1995)