An Unexpected Result in Classical Electrostatics. - Augustus J. E. M. Janssen; Jan B. M. Melissen (SIAM Rev., 1992)

Packing 16, 17 or 18 circles in an equilateral triangle. - Jan B. M. Melissen; P. C. Schuur (Discret. Math., 1995)

Improved Coverings of a Square with Six and Eight Equal Circles. - Jan B. M. Melissen; P. C. Schuur (Electron. J. Comb., 1996)

Covering a Rectangle with Six and Seven Circles. - Jan B. M. Melissen; P. C. Schuur (Discret. Appl. Math., 2000)