Geodesic
Multiple solution of systems of linear algebraic equations by an iterative method with recomputed preconditioner
Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXVII, Tome 428 (2014), pp. 42-48

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An algorithm for multiple solution of systems of linear algebraic equations by preconditioned BiCGStab method is proposed. When the number of iterations for solving a current system becomes too large, the precontioner is recomputed. Results of numerical experiments on computing the capacitance matrices of a microstrip line in a wide range of its sizes, demonstrating the possibility of a considerable reduction of the total solution time, are presented. 
@article{ZNSL_2014_428_a3,
     author = {R. R. Akhunov and S. P. Kuksenko and T. R. Gazizov},
     title = {Multiple solution of systems of linear algebraic equations by an iterative method with recomputed preconditioner},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {42--48},
     publisher = {mathdoc},
     volume = {428},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_428_a3/}
}
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R. R. Akhunov; S. P. Kuksenko; T. R. Gazizov. Multiple solution of systems of linear algebraic equations by an iterative method with recomputed preconditioner. Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXVII, Tome 428 (2014), pp. 42-48. http://geodesic.mathdoc.fr/item/ZNSL_2014_428_a3/