ϕ-FEM: an optimally convergent and easily implementable immersed boundary method for particulate flows and Stokes equationsMichel Duprez, Vanessa Lleras and Alexei LozinskiESAIM: M2AN, 57 3 (2023) 1111-1142DOI: https://doi.org/10.1051/m2an/2023010
