Some articles

H. Bass and A. Roy. Lectures on topics in algebraic K-theory. Tata Institute of Fundamental Research Lectures on Mathematics, No. 41. Year: 1967.

S. M. Bhatwadekar and R. Sridharan. On a question of Roitman. J. Ramanujan Math. Soc. 16 (2001), no. 1, 45–61. 

 S. M. Bhatwadekar and R. Sridharan. On Euler classes and stably free projective modules. Algebra, arithmetic and geometry, Part I, II (Mumbai, 2000), 139–158, Tata Inst. Fund. Res. Stud. Math., 16, Tata Inst. Fund. Res., Bombay, 2002.

 S. M. Bhatwadekar and R. Sridharan. Projective modules over affine algebras.

H. Lindel. On projective modules over positively graded rings. Vector bundles on algebraic varieties (Bombay, 1984), 251–273, Tata Inst. Fund. Res. Stud. Math., 11, Tata Inst. Fund. Res., Bombay, 1987.

N. Mohan Kumar. A note on Eisenbud-Evans conjecture. J. Indian Math. Soc. (N.S.) 45 (1981), no. 1-4, 163–165 (1984).

N. Mohan Kumar,  M. P. Murthy and A. Roy. A cancellation theorem for projective modules over finitely generated rings. Algebraic geometry and commutative algebra, Vol. I, 281–287, Kinokuniya, Tokyo, 1988.

M. P. Murthy. A survey of obstruction theory for projective modules of top rank. Algebra, K-theory, groups, and education (New York, 1997), 153–174, Contemp. Math., 243, Amer. Math. Soc., Providence, RI, 1999.

 R. G. Swan. Serre's problem. Conference on Commutative Algebra—1975 (Queen's Univ., Kingston, Ont., 1975), pp. 1–60, Queen's Univ., Kingston, ON, 1975.