Ma\.{n}gal, Anil and Mahe\'{s} Candra \'{S}arm\={a} (2004) \={A}yurved\={\i}ya dravyo\d{m} ke pratinidhi eva\d{m} apami\'{s}ra\d{n} dravya (Adulteration and substitution of Ayurvedic drugs). [Publication]