Light-front quark model consistent with Drell-Yan-West duality and quark counting rules / T. Gutsche, V. E. Lyubovitskij, I. Schmidt, A. Vega // Physical Review D. 2014. Vol. 89, № 5. P. 054033-1-054033-12. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000479511