Pengaruh penggunaan kafein terhadap kadar asam lemak bebas, frekuensi pernafasan dan tingkat kelelahan selama kerja fisik ringan berdurasi panjang pada manusia dewasa = The Effect of the use caffeine on the levels of free fatty acids, breathing frequency, and level of fatigue during long-duration light exercise in human - Lany Melian, author (Universitas Indonesia, 2009)