1.      On generalized commutators, Rev. Roum. Math. Pure et Appl. 17 (1972) pp. 1237-1239 (with S.M. Patel).

      2.      Operators satisfying certain growth Conditions-I, Proc. Amer. Math. Soc. 53 (1975) pp. 341-346 (with S. M. Patel)

      3.      Operators satisfying certain growth Conditions-II, Proc. Amer. Math. Soc. 58 (1976), pp. 148-150.

      4.      On spectra of Polar factors of some Convexoid Operators, Indian Jour. Pure Appl. Math., 8 (1977), pp. 90-93 (With P. B. Ramanujan).

      5.      Operators Satisfying certain growth Conditions-III, Vidya B. Sciences 20 (1977) pp 44- 54.

      6.      On k-qausihyponormal operators, Math. Japonica 23 (1978) pp. 185-189 (with S. L. Campbell)

      7.      A note on partial isometries, Vidya, B. Sciences 22 (1979) pp. 43-47.

      8.      A note on Partial isometries, Indian Jour. Pure and Appl. Math. 11 (1980), pp.208-211.

      9.      A note on d-Symmetric Operators, Bull. Austral. Math. Soc. 23 (1981), pp. 471-475 (with P.B. Ramanujan).

  10.      On k-quasihyponormal operators-II, Bull Austral. Math. Soc. 24 (1981), pp. 61-67 (with P. B. Ramanujan).

  11.      Operators satisfying certain growth conditions- IV, Vidya, B-Sciences 25 (1982), pp. 71-74 (With P. B. Ramanujan).

  12.      On Extension of the Fugledge- Putnam theorem and normality of operators, Indian J. Pure Appl. Math. 14(1)(1983), 1343-1347.

  13.      Quasisimilarity and k-Quasihyponormal Operators, Math. Today Vol. 3. Dec. (1985) P. 49-54.

  14.      On Subnormal operators, Proc. Indian Academy of Sc.(Math. Sci.) 95 (1) (1986) 41-44.

  15.      Topics in operator Theory (With P. B. Ramanujan and N.N. Chaurasia), Department of Mathematics, Sardar Patel University, Vallabh Vidyanagar (1984).

  16.      On Extension of Fugledge-Putnam Theorem, Indian J. Pure Appl. Math. 19(1) (1988), 55-58 (With S. M. Patel).