@article{1487787,
      author = {Issa, Tomayess, and Isaias, Pedro, and Issa, Theodora,},
      url = {http://library.usi.edu/record/1487787},
      title = {Challenges and opportunities of e-learning and blended  learning during (COVID-19)., Part 1 /},
      recid = {1487787},
      pages = {1 online resource (141 pages).},
}