Fatranská, M Circadian rhythm of 3-metoxy-4-hydroxy-mandelic acid (VMA) excretion in man, influenced by changing conditions of illumination. [electronic resource] - Activitas nervosa superior 1970 - 148-9 p. digital Publication Type: Journal Article ISSN: 0001-7604 Subjects--Topical Terms: AdultCircadian RhythmDarknessHumansLightMandelic Acids--urine