D. Ahmadian, O. Farkhondeh Rouz, K. Ivaz, and A. Safdari-Vaighani, Robust numerical algorithm to the European option with illiquid markets, Applied Mathematics and Computation, 366 (2020), 124693.
 E. Alpkvist, C. Picioreanu, M. C. M. Van Loosdrecht, and A. Heyden, Three-dimensional biofilm model with individual cells and continuum EPS matrix, Biotechnol. Bioeng. 94 (2006), 961–979.
 K. Atkinson and W. Han, Theoretical Numerical Analysis; A Functional Analysis Framework. Third Edition. 2009.
 B. Babayar-Razlighi and K. Ivaz, M. R. Mokhtarzadeh, Newton-product integration for a Stefan problem with kinetics, J. Sci. I.R. Iran 22 (2011) 51–61.
 B.Babayar-Razlighi and B.Soltanalizadeh, Numerical solution for system of singular nonlinear Volterra integro differential equations by Newton-Product method, Applied Mathematics and Computation, 219 (2013), 8375–8383.
 N. Bellomo, A. Bellouquid, J. Nieto, and J. Soler, Multiscale biological tissue models and fluxlimited chemotaxis from binary mixtures of multicellular growing systems, Math. Models Methods Appl. Sci. 20 (2010), 1179–1207.
 B. D’Acunto and L. Frunzo, Free boundary problem for an initial cell layer in multispecies biofilm formation, Applied Mathematics Letters. 25 (2012), 20–26.
 B. D’Acunto and L. Frunzo, Qualitative analysis and simulations of a free boundary problem for multispecies biofilm models, Math. Comput. Modelling. 53 (2011), 1596–1606.
 P. Darania and K. Ivaz, Numerical solution of nonlinear VolterraFredholm integro-differential equations, Computers and Mathematics with Applications. 56 (2008), 2197–2209.
 P. Darania, J. Ahmadi Shali, and K. Ivaz, New computational method for solving some 2-dimensional nonlinear Volterra integro-differential equations, Numerical Algorithms, 57 (2011), 125–147.
 L. Hall-Stoodley, J.W. Costerton, and P. Stoodley, Bacterial biofilms: from the natural environment to infectious diseases, Nat. Rev. Microbiol. 2 (2004), 95–108.
 H. C. Jones, I. L. Roth, and W. M. Sanders, Electron microscopic study of a slime layer, J. Bacteriol. 99 (1969), 316–325.
 C. Picioreanu, J. U. Kreft, and M. C. M. van Loosdrecht, Particle-based multidimensional multispecies biofilm model, Appl. Environ. Microbiol. 70 (2004), 3024–3040.
 O. Wanner and W. Gujer, A multispecies biofilm model, Biotechnol. Bioeng. 28 (1986), 314–328.
 E. Zeidler, Nonlinear Functional Analysis and its Applications. I: Fixedpoint Theorems, Springer-Verlag, New York, 1985.