Patel, K. S. and Shukla, A. and Goswami, A. and Chandavanshi, S. K. and Hoffmann, Peter (2001):
A new spectrophotometric method for the determination of total and ferric iron in rain water at the ppb level.
In: Fresenius' Journal of Analytical Chemistry, 369 (6), pp. 530-534. [Article]

Patel, K. S. and Shukla, A. and Agarwal, N. and Hoffmann, Peter (2001):
Visible spectrophotometric determination of tantalum in soil, sediment, minerals, and alloys.
84, In: Journal of AOAC international, pp. 399-405. [Article]

Patel, K. S. and Shukla, A. and Goswami, A. and Chandavanshi, S. K. and Hoffmann, Peter (2001):
A new spectrophotometric method for the determination of total and ferric ion in rain water at the ppb level.
369, In: Fresenius' journal of analytical chemistry, pp. 530-534. [Article]

Patel, K. S. and Shukla, A. and Tripathi, A. N. and Hoffmann, Peter (2001):
Heavy Metal Concentrations of Precipitation in East Madhya Pradesh of India.
In: Water, Air, & Soil Pollution, 130 (1), pp. 463-468. [Article]