Links:

https://my.bulbapp.com/, https://www.commonsense.org/education/reviews/bulb, https://ciet.nic.in/upload/Digital%20Portfolio%20with%20Bulbapp.pdf,

Videos:

https://www.youtube.com/watch?v=I3JGlUNW7yY

https://www.youtube.com/watch?v=fUaqz1nW5h8

Papers:

Gagliolo, M., Schmidhuber, J. Learning dynamic algorithm portfolios. Ann Math Artif Intell 47, 295–328 (2006).

https://doi.org/10.1007/s10472-006-9036-z

Arch G. Woodside, Praveen Soni, Customer portfolio analysis for strategy development in direct marketing,

Journal of Direct Marketing, Volume 5, Issue 2, 1991, Pages 6-19, ISSN 0892-0591, https://doi.org/10.1002/dir.4000050204.