W. S. Nugroho, M. Sudarwanto, D. W. Lukman, R. Naim, A. A. Hassan, and E. Usleber, “Detection of Mycobacterium avium subspecies paratuberculosis in formula milk from Bogor using PCR IS 900”, Med J Indones, vol. 17, no. 3, pp. 183-7, Aug. 2008.