1. Electrode placement for p300 and SSVEP https://www.researchgate.net/figure/283728220_fig2_Fig-3-Electrode-placement-and-SSVEP-signal-spectrum-a-EEG-electrodes-placed-in

2. Comparative Study of SSVEP- and P300-Based Models for the Telepresence Control of Humanoid Robots https://www.researchgate.net/publication/283728220_Comparative_Study_of_SSVEP-_and_P300-Based_Models_for_the_Telepresence_Control_of_Humanoid_Robots

3. P300 brain computer interface: current challenges and emerging trends http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3398470/

4. A Low-Cost EEG System-Based Hybrid Brain-Computer Interface for Humanoid Robot Navigation and Recognition http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3762758/

5. A Review of P300, SSVEP, and Hybrid P300/SSVEP BrainComputer Interface Systems [pdf] http://cdn.intechopen.com/pdfs/44907/InTech-A_review_of_p300_ssvep_and_hybrid_p300_ssvep_brain_computer_interface_systems.pdf