Goldberg, Ludmila. "On singular projective deformations of two second class totally focal pseudocongruences of planes.." International Journal of Mathematics and Mathematical Sciences 11.1 (1988): 71-80. <http://eudml.org/doc/46344>.
@article{Goldberg1988, author = {Goldberg, Ludmila}, journal = {International Journal of Mathematics and Mathematical Sciences}, keywords = {deformation singular projective; focal surface; pseudocongruences; projective space; Totally focal}, language = {eng}, number = {1}, pages = {71-80}, publisher = {Hindawi Publishing Corporation, New York}, title = {On singular projective deformations of two second class totally focal pseudocongruences of planes.}, url = {http://eudml.org/doc/46344}, volume = {11}, year = {1988}, }
TY - JOUR AU - Goldberg, Ludmila TI - On singular projective deformations of two second class totally focal pseudocongruences of planes. JO - International Journal of Mathematics and Mathematical Sciences PY - 1988 PB - Hindawi Publishing Corporation, New York VL - 11 IS - 1 SP - 71 EP - 80 LA - eng KW - deformation singular projective; focal surface; pseudocongruences; projective space; Totally focal UR - http://eudml.org/doc/46344 ER -