Oksenkrug G.F. (1969) An application of the ninhydrin reaction for fluorometric determination of tissue serotonin extracted at low pH-value. Voprosy Meditsinskoi Khimii, 15(3), 317-321.

et al. An application of the ninhydrin reaction for fluorometric determination of tissue serotonin extracted at low pH-value // Voprosy Meditsinskoi Khimii. - 1969. - V. 15. -N 3. - P. 317-321.

et al., "An application of the ninhydrin reaction for fluorometric determination of tissue serotonin extracted at low pH-value." Voprosy Meditsinskoi Khimii 15.3 (1969): 317-321.

Oksenkrug, G. F. (1969). An application of the ninhydrin reaction for fluorometric determination of tissue serotonin extracted at low pH-value. Voprosy Meditsinskoi Khimii, 15(3), 317-321.