APA (7th ed.) Citation

Stoyan, Y. G., & Chugay, A. M. (2011). An optimization problem of packing identical circles into a multiply connected region. Part 1. A mathematical model and its characteristics.

Chicago Style (17th ed.) Citation

Stoyan, Yu. G., and A. M. Chugay. An Optimization Problem of Packing Identical Circles into a Multiply Connected Region. Part 1. A Mathematical Model and Its Characteristics. 2011.

MLA (8th ed.) Citation

Stoyan, Yu. G., and A. M. Chugay. An Optimization Problem of Packing Identical Circles into a Multiply Connected Region. Part 1. A Mathematical Model and Its Characteristics. 2011.

Warning: These citations may not always be 100% accurate.