Some global characterizations of the sphere in $E^4$

Svoboda, Karel. "Some global characterizations of the sphere in $E^4$." Časopis pro pěstování matematiky 103.4 (1978): 391-399. <http://eudml.org/doc/19620>.

@article{Svoboda1978,
author = {Svoboda, Karel},
journal = {Časopis pro pěstování matematiky},
keywords = {Surface; Parallel Normal Vector Field; Orthogonal Conjugate Net of Lines; Sphere},
language = {eng},
number = {4},
pages = {391-399},
publisher = {Mathematical Institute of the Czechoslovak Academy of Sciences},
title = {Some global characterizations of the sphere in $E^4$},
url = {http://eudml.org/doc/19620},
volume = {103},
year = {1978},
}

TY - JOUR
AU - Svoboda, Karel
TI - Some global characterizations of the sphere in $E^4$
JO - Časopis pro pěstování matematiky
PY - 1978
PB - Mathematical Institute of the Czechoslovak Academy of Sciences
VL - 103
IS - 4
SP - 391
EP - 399
LA - eng
KW - Surface; Parallel Normal Vector Field; Orthogonal Conjugate Net of Lines; Sphere
UR - http://eudml.org/doc/19620
ER -