Dynamics of snoring sounds and its connection with obstructive sleep apnea - Alencar, Adriano Mesquita; Silva, Diego Greatti Vaz da; Oliveira, Carolina Beatriz; Moriya, Henrique Takachi; Lorenzi Filho, Geraldo; Vieira, André de Pinho (PHYSICA A: STATISTICAL MECHANICS AND ITS APPLICATIONS, 2013)