González, J.A., Kolman, R., Cho, S.S., Felippa, C.A., Park, K.C. Inverse mass matrix via the method of localized lagrange multipliers. International Journal for Numerical Methods in Engineering. 2018, 113(2), 277-295. ISSN 0029-5981. E-ISSN 1097-0207. Available: https://doi.org/10.1002/nme.5613.