Παραπομπή σε μορφή APA (7η εκδ.)

Idczak, D., Walczak, S., Faculty of Mathematics and Computer Science, U. o. L., & Faculty of Mathematics and Computer Science, S. B. S. U. (2020). An Extremum Principle for Smooth Problems. https://doi.org/10.3390/g11040056

Παραπομπή σε μορφή Chicago (17η εκδ.)

Idczak, Dariusz, Stanislaw Walczak, University of Lodz Faculty of Mathematics and Computer Science, και Stefan Batory State University Faculty of Mathematics and Computer Science. An Extremum Principle for Smooth Problems. 2020. https://doi.org/10.3390/g11040056.

Παραπομπή σε μορφή MLA (9th εκδ.)

Idczak, Dariusz, et al. An Extremum Principle for Smooth Problems. 2020. https://doi.org/10.3390/g11040056.