Haralanova, V.,
Kamenov, K., &
Ronkova, V.
().
Challenges in training on engineering graphics - experiences from two еuropean universities. // <I>EDULEARN 2018<D> : 10th International conference on ''Education and new learning technologies 2018'', Palma, Spain, 2-4 july 2018 : Proc., 2018, p. 7502-7513.. (5362),