@article{TRSPY_1998_220_a3,
     author = {S. M. Aseev},
     title = {On the theory of necessary conditions for optimality for problems with phase constraints},
     journal = {Informatics and Automation},
     pages = {35--44},
     publisher = {mathdoc},
     volume = {220},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1998_220_a3/}
}