Multiple Time-Scales Dynamics of a Cardiac Pacemaker Model with Application to Heart Rhythm Modeling: Theoretical Study and FPGA Implementation. - Guy Chance Gildas Kuate; Jeanne Sandrine Mabekou Takam; Frank Xavier Ngagoum Tchamdjeu; Hilaire Bertrand Fotsin (Int. J. Bifurc. Chaos, 2022)