APA (7th ed.) Citation

Kalita, E. A., Калита, Е. А., & Калита, Е. А. (1993). On nonlinear higher order elliptic systems positive in the first derivatives. Institute of Mathematics, NAS of Ukraine.

Chicago Style (17th ed.) Citation

Kalita, E. A., Е. А Калита, and Е. А Калита. On Nonlinear Higher Order Elliptic Systems Positive in the First Derivatives. Institute of Mathematics, NAS of Ukraine, 1993.

MLA (8th ed.) Citation

Kalita, E. A., et al. On Nonlinear Higher Order Elliptic Systems Positive in the First Derivatives. Institute of Mathematics, NAS of Ukraine, 1993.

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