A method of optimal lattice packing of congruent oriented polygons in the plane. - Yu. G. Stoyan; V. N. Patsuk (Eur. J. Oper. Res., 2000)

Covering a compact polygonal set by identical circles. - Yu. G. Stoyan; V. N. Patsuk (Comput. Optim. Appl., 2010)