Sinha, Arun K and Verma , S C and Sharma , U K (2007) Development and validation of a reversed phase high performance liquid chromatography method for the quantitative determination of vanillin and related phenolic compounds in Vanilla planifolia. Journal of Separation Science, 30. pp. 15-20.

Sharma , N and Sharma, U K and Malik, S and Bhushan, Shashi and Kumar, Vinod and Verma , S C and Sharma, N and Sharma, Madhu and Sinha, Arun K (2008) Isolation and purification of acetylshikonin and b-acetoxyisovalerylshikonin from cell suspension cultures of Arnebia euchroma (Royle) Johnston using rapid preparative HPLC. Journal of Separation Science, 31. pp. 629-635.

Sharma, A and Verma, S C and Saxena, N and Chadda, N and Singh, N P and Sinha, Arun K (2006) Microwave- and ultrasound-assisted extraction of vanillin and its quantification by high-performance liquid chromatography in Vanilla planifolia. Journal of Separation Science, 29. pp. 613-619.