APA (7th ed.) Citation

Wambsganß, J. (1992). Expected color variations of the microlensed QSO 2237+0305. Lecture notes in physics, 406(?), . https://doi.org/10.1007/3-540-55797-0_100

Chicago Style (17th ed.) Citation

Wambsganß, Joachim. "Expected Color Variations of the Microlensed QSO 2237+0305." Lecture Notes in Physics 406, no. ? (1992). https://doi.org/10.1007/3-540-55797-0_100.

MLA (9th ed.) Citation

Wambsganß, Joachim. "Expected Color Variations of the Microlensed QSO 2237+0305." Lecture Notes in Physics, vol. 406, no. ?, 1992, https://doi.org/10.1007/3-540-55797-0_100.